{"id":3463,"date":"2026-04-22T10:14:23","date_gmt":"2026-04-22T10:14:23","guid":{"rendered":"https:\/\/productionscrews.com\/a2-70-bolt\/"},"modified":"2026-04-22T10:14:23","modified_gmt":"2026-04-22T10:14:23","slug":"a2-70-bolt","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/ko\/a2-70-bolt\/","title":{"rendered":"A2-70 \ubcfc\ud2b8: \ub4f1\uae09, \uac15\ub3c4 \ubc0f \uc6a9\ub3c4\uc5d0 \ub300\ud55c \uc644\ubcbd \uac00\uc774\ub4dc"},"content":{"rendered":"<h1>A2-70 \ubcfc\ud2b8: \ub4f1\uae09, \uac15\ub3c4 \ubc0f \uc6a9\ub3c4\uc5d0 \ub300\ud55c \uc644\ubcbd \uac00\uc774\ub4dc<\/h1>\n<p class=\"direct-answer\"><strong>A2-70 \ubcfc\ud2b8\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 A2 \ub4f1\uae09 \uac15\ucca0(304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc640 \uc720\uc0ac\ud55c)\ub85c \ub9cc\ub4e4\uc5b4\uc9c4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uccb4\ub85c, \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4\ub294 700 N\/mm\u00b2\uc785\ub2c8\ub2e4 \u2014 \uc77c\ubc18 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1, \uac74\uc124, \uacbd\ub7c9 \ud574\uc591 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uac00\uc7a5 \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \ub0b4\uc2dd\uc131 \ubcfc\ud2b8\uc785\ub2c8\ub2e4.<\/strong><\/p>\n<figure><img decoding=\"async\" style=\"width: 100%; height: auto;\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/04\/01-hero-4.jpg\" alt=\"\uc0b0\uc5c5 \uae30\uacc4 \ubc0f \uac74\uc124\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uace0\uac15\ub3c4 \uc721\uac01 \ubcfc\ud2b8\uc758 \ud074\ub85c\uc988\uc5c5, \ub098\uc0ac\uc0b0 \ub05d \ud3ec\ud568\" \/><\/figure>\n<p>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\ub97c \uc8fc\ubb38\ud588\uc744 \ub54c \uc721\uac01 \uba38\ub9ac\uc5d0 \"A2-70\"\uc774 \uc0c8\uaca8\uc9c4 \uac83\uc744 \ubcf8 \uc801\uc774 \uc788\ub2e4\uba74, \uadf8\uac83\uc740 \uace0\uc815\uc7a5\uce58 \uc138\uacc4\uc758 \ud575\uc2ec \uc81c\ud488\uc785\ub2c8\ub2e4. \ub370\ud06c \ub09c\uac04\ubd80\ud130 \uc2dd\ud488 \uac00\uacf5 \ucee8\ubca0\uc774\uc5b4, \ud0dc\uc591\uad11 \ud328\ub110 \uc7a5\ucc29\ub300\uae4c\uc9c0 \ubaa8\ub4e0 \uacf3\uc5d0 \ub4f1\uc7a5\ud558\uba70 \uadf8 \uc774\uc720\uac00 \uc788\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc <a href=\"https:\/\/productionscrews.com\/ko\/ultimate-guide-stainless-steel-bar-selection-prevent-costly-mistakes-failures\/\" target=\"_blank\" rel=\"noopener\"  data-wpil-monitor-id=\"824\">\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8<\/a> \ud558\ub098\ub294 \ud558\ub098\uc758 \uc7ac\ub8cc\uac00 \uc544\ub2c8\uba70, \ube5b\ub098\ub294 \ubcfc\ud2b8\uac00 \ud544\uc694\ud55c \ubaa8\ub4e0 \uc791\uc5c5\uc774 \ub3d9\uc77c\ud55c \ub4f1\uae09\uc744 \ud544\uc694\ub85c \ud558\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uac00\uc774\ub4dc\ub294 A2-70 \ud45c\uae30\uac00 \uc815\ud655\ud788 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub294\uc9c0, \uc774 \ubcfc\ud2b8\uac00 \ub6f0\uc5b4\ub09c \uc810\uacfc \ubd80\uc871\ud55c \uc810\uc774 \uc5b4\ub514\uc778\uc9c0, A4-80\uacfc \uc5b4\ub5bb\uac8c \ube44\uad50\ub418\ub294\uc9c0 \uc0c1\uc138\ud558\uac8c \uc124\uba85\ud569\ub2c8\ub2e4. <a href=\"https:\/\/productionscrews.com\/ko\/carbon-steel-screws\/\" target=\"_blank\" rel=\"noopener\"  data-wpil-monitor-id=\"825\">\ud0c4\uc18c\uac15<\/a> \ub300\uc548\uacfc \uc124\uce58\ud560 \ub54c \uc2e4\uc81c\ub85c \ud544\uc694\ud55c \ud1a0\ud06c\uc640 \ub4dc\ub9b4 \ud06c\uae30\ub97c \uc54c\ub824\uc90d\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9\uc5d0\ub294 \ucc98\uc74c\ubd80\ud130 \uc801\uc808\ud55c \uccb4\uacb0\uad6c\ub97c \uc9c0\uc815\ud560 \uc218 \uc788\uac8c \ub418\uc5b4, \uc5fc\ud654\ubb3c \ud568\uc720 \ud574\uc548 \ud658\uacbd\uc5d0\uc11c A2\uac00 \ub179\uc2ac\ub294 \uac83\uc744 \uc5b4\ub835\uac8c \ubc30\uc6b0\ub294 \ub300\uc2e0 \ubc14\ub85c \uc54c \uc218 \uc788\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<hr \/>\n<h2>A2-70 \ubcfc\ud2b8\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p>An <strong>a2 70 \ubcfc\ud2b8<\/strong> \ub294 <a href=\"https:\/\/www.iso.org\/standard\/73538.html\" target=\"_blank\" rel=\"noopener\">ISO 3506 \ud45c\uc900<\/a>\uc5d0 \ub530\ub77c \ubd84\ub958\ub41c \ubbf8\ud130\ubc95 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uccb4\ub85c, \ub0b4\uc2dd\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uccb4\uc758 \uae30\uacc4\uc801 \ud2b9\uc131\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. \uc774 \ud45c\uae30\ubc95\uc740 \uc7ac\ub8cc\uc640 \uac15\ub3c4\ub97c \ubaa8\ub450 \uc54c\ub824\uc8fc\ub294 \ub450 \ubd80\ubd84\uc758 \ucf54\ub4dc\uc785\ub2c8\ub2e4.<\/p>\n<h3>A2-70 \ud45c\uae30 \ud574\uc11d<\/h3>\n<p>\u201cA2\u201d \ubd80\ubd84\uc740 <strong>\uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ub4f1\uae09<\/strong> \uc744 \uc758\ubbf8\ud558\uba70, \uad6c\uccb4\uc801\uc73c\ub85c\ub294 AISI 304\uc640 \uac00\uc7a5 \uac00\uae4c\uc6b4 18\/8 \ud06c\ub86c-\ub2c8\ucf08 \ud569\uae08\uc785\ub2c8\ub2e4. \u201c\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\u201d\ub294 \uac15\ucca0\uc758 \uacb0\uc815 \ubbf8\uc138\uad6c\uc870\ub97c \uc124\uba85\ud558\uba70, \ube44\uc790\uc131\uc801\uc774\uace0, \ub192\uc740 \uc5f0\uc131 \ubc0f \ubcf8\uc9c8\uc801\uc73c\ub85c \ub0b4\uc2dd\uc131\uc744 \uac16\ucd94\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\u201c70\u201d\uc740 <strong>\uc18d\uc131 \ub4f1\uae09<\/strong> \uc744 \uc758\ubbf8\ud558\uba70, \uad6c\uccb4\uc801\uc73c\ub85c\ub294 \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4\ub294 <strong>700 N\/mm\u00b2 (MPa)<\/strong> \uc774\uace0, \ucd5c\uc18c \uc99d\uba85 \uc751\ub825(\ud56d\ubcf5 \uac15\ub3c4\uc640 \ub3d9\ub4f1)\uc740 450 N\/mm\u00b2\uc785\ub2c8\ub2e4. \uc2e4\uc9c8\uc801\uc73c\ub85c, \uc774\ub294 A2 70 \ubcfc\ud2b8\uac00 \uc778\uc7a5 \uac15\ub3c4 \uce21\uba74\uc5d0\uc11c \ubbf8\ud130\ubc95 Grade 8.8 \ubcfc\ud2b8\uc640 \ub300\ub7b5 \ub3d9\ub4f1\ud558\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uc9c0\ub9cc, \ud0c4\uc18c\uac15\ucc98\ub7fc \ub2f4\uae08\uc9c8 \ubc0f \ud15c\ud37c\ub9c1\ud560 \uc218 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \uc81c\uc870 \uacfc\uc815\uc5d0\uc11c \ub0c9\uac04 \uac00\uacf5\uc744 \ud1b5\ud574 \uadf8 \uac15\ub3c4\ub97c \ub2ec\uc131\ud569\ub2c8\ub2e4.<\/p>\n<p>\u201cA2-70\u201d\uc774 \ucc0d\ud78c \uac83\uc744 \ubcf4\uba74 <a href=\"https:\/\/productionscrews.com\/ko\/cylindrical-head-bolts\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"826\">\ubcfc\ud2b8 \uba38\ub9ac<\/a> \ud3ec\uc7a5\uc5d0 \ud45c\uc2dc\ub418\uc5b4 \uc788\uac70\ub098 \uadf8 \uc2a4\ud0ec\ud504\ub294 \uace0\uc815 \uc7a5\uce58\uac00 \uc7ac\ub8cc \ubc0f \uae30\uacc4\uc801 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud55c\ub2e4\ub294 \uc81c\uc870\uc5c5\uccb4\uc758 \ubcf4\uc99d\uc785\ub2c8\ub2e4. ISO 3506\uc5d0 \ub530\ub77c, \ud45c\uc2dc\ub294 \uacf5\uac04\uc774 \ud5c8\uc6a9\ub418\ub294 \uacbd\uc6b0 M5 \uc774\uc0c1 \ubcfc\ud2b8\uc5d0 \ub098\ud0c0\ub098\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p>\uad6c\ub9e4\ud300\uc774 \ud63c\ub3d9\ud558\ub294 \ud55c \uac00\uc9c0\ub294: <strong>A2-70\uc740 A2-50\uacfc \ub3d9\uc77c\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/strong>. \u201850\u2019 \ubcc0\ud615\uc740 \ub3d9\uc77c\ud55c A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc7ac\uc9c8\uc744 \uc0ac\uc6a9\ud558\uc9c0\ub9cc \ub354 \ubd80\ub4dc\ub7fd\uace0 \ud480\ub9bc \ucc98\ub9ac\ub41c \uc0c1\ud0dc\ub85c \uc778\uc7a5 \uac15\ub3c4\ub294 500 N\/mm\u00b2\uc5d0 \ubd88\uacfc\ud569\ub2c8\ub2e4. \uc774 \ub450 \ub4f1\uae09\uc740 \uc678\uad00\uc0c1 \ub3d9\uc77c\ud569\ub2c8\ub2e4. \uc124\uce58 \uc804\uc5d0 \ud56d\uc0c1 \ud45c\uc2dd\uc744 \ud655\uc778\ud558\uc138\uc694.<\/p>\n<h3>A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc758 \uc7ac\ub8cc \uad6c\uc131<\/h3>\n<p>A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub294 \ubcf8\uc9c8\uc801\uc73c\ub85c \uc804 \uc138\uacc4\uc5d0\uc11c \uac00\uc7a5 \ub110\ub9ac \uc0dd\uc0b0\ub418\ub294 304 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uacfc \ub3d9\uc77c\ud569\ub2c8\ub2e4. \uadf8 \ub0b4\uc2dd\uc131\uc740 \uc0b0\uc18c \uc874\uc7ac \ud558\uc5d0 \ud45c\uba74\uc5d0 \uc790\uc5f0\uc2a4\ub7fd\uac8c \ud615\uc131\ub418\ub294 \uc218\ub3d9 \ud06c\ub86c \uc0b0\ud654\uce35\uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \uc774 \uce35\uc740 \uae01\ud798\uc5d0\ub3c4 \uc2a4\uc2a4\ub85c \ubcf5\uad6c\ub418\uae30 \ub54c\ubb38\uc5d0 A2 \uace0\uc815\uad6c\ub294 \uc124\uce58 \ud6c4\uc5d0\ub3c4 \ub0b4\uc2dd\uc131\uc744 \uc720\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc5d0 \ub530\ub974\uba74 <a href=\"https:\/\/www.worldstainless.org\/\" target=\"_blank\" rel=\"noopener\">\uc138\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud611\ud68c\uc758 \uacf5\uac1c \ub370\uc774\ud130<\/a>, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4 \ub4f1\uae09\uc740 \uc804 \uc138\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \uc0dd\uc0b0\ub7c9\uc758 \uc57d 70%\ub97c \ucc28\uc9c0\ud558\uba70, 304\uc640 \uc720\uc0ac\ud55c \ud569\uae08\uc774 \uc9c0\ubc30\uc801\uc785\ub2c8\ub2e4. \uc774\ub294 \ub0b4\uc2dd\uc131, \uc131\ud615\uc131, \ube44\uc6a9\uc758 \uade0\ud615 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\uc6d0\uc18c<\/th>\n<th>A2 (304 \uc720\uc0ac)<\/th>\n<th>A4 (316 \uc720\uc0ac)<\/th>\n<th>\ud0c4\uc18c\uac15 8.8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ud06c\ub86c<\/td>\n<td>17\u201319TP3T<\/td>\n<td>16\u201318TP3T<\/td>\n<td>0.5%<\/td>\n<\/tr>\n<tr>\n<td>\ub2c8\ucf08<\/td>\n<td>8\u201310TP3T<\/td>\n<td>10\u201314TP3T<\/td>\n<td>\ubbf8\ub7c9<\/td>\n<\/tr>\n<tr>\n<td>\ubab0\ub9ac\ube0c\ub374<\/td>\n<td>\uc5c6\uc74c<\/td>\n<td>2\u20133TP3T<\/td>\n<td>\uc5c6\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\ud0c4\uc18c<\/td>\n<td>\u2264 0.08%<\/td>\n<td>\u2264 0.08%<\/td>\n<td>0.35\u20130.45TP3T<\/td>\n<\/tr>\n<tr>\n<td>\uc778\uc7a5 \uac15\ub3c4 \ucd5c\uc18c\uac12<\/td>\n<td>700 N\/mm\u00b2 (70\ub4f1\uae09)<\/td>\n<td>800 N\/mm\u00b2 (80\ub4f1\uae09)<\/td>\n<td>800 N\/mm\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\uc790\uc131<\/td>\n<td>No<\/td>\n<td>No<\/td>\n<td>\uc608<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\ubab0\ub9ac\ube0c\ub374 \ud568\ub7c9\uc740 A2\uc640 A4\uc758 \uc911\uc694\ud55c \ucc28\uc774\uc810\uc785\ub2c8\ub2e4. \ubab0\ub9ac\ube0c\ub374\uc740 \uc5fc\uc18c \ubd80\uc2dd\uc5d0 \ub300\ud55c \uc800\ud56d\ub825\uc744 \ud06c\uac8c \ud5a5\uc0c1\uc2dc\ud0a4\uba70, \uc774 \ub54c\ubb38\uc5d0 A4-80\uc740 \ud574\uc591 \ubc0f \ud574\uc548 \ud658\uacbd\uc5d0 \uc801\ud569\ud558\uac8c \uc9c0\uc815\ub418\uace0, A2-70 \ubcfc\ud2b8\ub294 \ub0b4\ub959 \ubc0f \uc77c\ubc18 \uc0b0\uc5c5\uc6a9\uc5d0 \ud45c\uc900 \uc120\ud0dd\uc785\ub2c8\ub2e4.<\/p>\n<hr \/>\n<h2>A2-70 \ubcfc\ud2b8 \uc720\ud615 \ubc0f \ubcc0\ud615<\/h2>\n<p>\u201cA2-70\u201d \ub4f1\uae09\uc740 \uc804\uccb4 \ud328\ubc00\ub9ac\uc758 \uccb4\uacb0\uad6c \ud5e4\ub4dc \uc2a4\ud0c0\uc77c, \ub098\uc0ac\uc0b0 \ud615\ud0dc, \uc0f9\ud06c \uad6c\uc131\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4. \uc5b4\ub5a4 \uc720\ud615\uc774 \ud544\uc694\ud55c\uc9c0 \uc54c\uba74 \uc798\ubabb\ub41c \uc81c\ud488 \uc8fc\ubb38\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<figure><img decoding=\"async\" style=\"width: 100%; height: auto;\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/04\/02-types-2.jpg\" alt=\"\ub529\ub871\uc774 \uc81c\uc870\ud55c \uc0b0\uc5c5\uc6a9 \ud5e5\uc2a4 \ud5e4\ub4dc \ubcfc\ud2b8.\" \/><\/figure>\n<h3>\uc721\uac01 \uba38\ub9ac \ubcfc\ud2b8 (DIN 933 \/ DIN 931 \/ ISO 4017)<\/h3>\n<p><strong>\uac00\uc7a5 \uc77c\ubc18\uc801\uc778 A2-70 \ubcfc\ud2b8 \uad6c\uc131\uc740 \uc721\uac01 \uba38\ub9ac\uc774\uba70, \uc804\ubd80 \ub610\ub294 \uc77c\ubd80 \ub098\uc0ac\uc0b0\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/p>\n<ul>\n<li><strong>DIN 933 \/ ISO 4017<\/strong>: \uc804\ubd80 \ub098\uc0ac\uc0b0\uc774 \uc788\ub294 \uc721\uac01 \ubcfc\ud2b8. \uba38\ub9ac\uc5d0\uc11c \ub05d\uae4c\uc9c0 \ub098\uc0ac\uc0b0\uc774 \uc774\uc5b4\uc9d1\ub2c8\ub2e4. \uc9e7\uc740 \ubcfc\ud2b8\uc5d0 \ud45c\uc900\uc774\uba70, \uc804\uccb4 \ub098\uc0ac\uc0b0 \uc811\uc18d\uc774 \ud544\uc694\ud560 \ub54c \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>DIN 931 \/ ISO 4014<\/strong>: \ubd80\ubd84 \ub098\uc0ac\uc0b0 \uc721\uac01 \ucea1 \uc2a4\ud06c\ub958. \ub098\uc0ac\uc0b0\uc774 \uc5c6\ub294 \uc0f9\ud06c \uad6c\uac04\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub9bd \uad6c\uc5ed\uc5d0 \ub098\uc0ac\uc0b0\uc774 \ud544\uc694 \uc5c6\ub294 \uc804\ub2e8 \ud558\uc911 \uacb0\ud569\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>DIN 960 \/ DIN 961<\/strong>: \ubbf8\uc138 \ud53c\uce58 \ub098\uc0ac\uc0b0 \ubc84\uc804. \ub35c \uc77c\ubc18\uc801\uc774\uc9c0\ub9cc \uc815\ubc00 \uae30\uacc4\uc5d0\uc11c \ubbf8\uc138 \uc870\uc815 \ub610\ub294 \uc9c4\ub3d9 \uc800\ud56d\uc774 \ud544\uc694\ud560 \ub54c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>M4\ubd80\ud130 M36\uae4c\uc9c0 \ud06c\uae30 \uac00\ub2a5(\ud2b9\uc218 \uc8fc\ubb38 \uc2dc \ub354 \ud070 \ud06c\uae30 \uac00\ub2a5), ISO 724\uc5d0 \ub530\ub978 \uac70\uce5c \ubbf8\ud130\ub9ad \ub098\uc0ac\uc0b0\uc774 \uae30\ubcf8\uc774\uba70, \ubbf8\uc138 \ud53c\uce58\uac00 \uba85\uc2dc\ub418\uc9c0 \uc54a\ub294 \ud55c \uae30\ubcf8\uac12\uc785\ub2c8\ub2e4.<\/p>\n<h3>\uc18c\ucf13 \ucea1 \uc2a4\ud06c\ub958 \ubc0f \uc568\ub7f0 \ubcfc\ud2b8 (ISO 4762)<\/h3>\n<p>A2-70 \uc18c\ucf13 \ucea1 \uc2a4\ud06c\ub958 \u2014 \ud754\ud788 <strong>A2-70 \uc568\ub7f0 \ubcfc\ud2b8<\/strong> \uac70\ub798 \uc2dc \u2014 \ub0b4\ubd80 \uc721\uac01 \ub4dc\ub77c\uc774\ube0c\ub97c \uc0ac\uc6a9\ud558\uc138\uc694. \uc2ac\ub86f \ucc44\ub110, \ud328\ub110 \uc7a5\ucc29 \ub610\ub294 \uc870\ubc00\ud55c \uae30\uacc4 \uc870\ub9bd\uacfc \uac19\uc774 \ub80c\uce58\uc758 \uc5ec\uc720 \uacf5\uac04\uc774 \uc81c\ud55c\ub41c \uacbd\uc6b0\uc5d0 \uc801\ud569\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4.<\/p>\n<p>\ud45c\uc900 M8 A2-70 \uc721\uac01 \ubcfc\ud2b8\ub294 \uba85\ubaa9 \ud5e4\ub4dc \uc9c1\uacbd\uc774 13mm\uc774\uace0 \uc18c\ucf13 \ud0a4 \ud06c\uae30\uac00 6mm\uc785\ub2c8\ub2e4. \ub0c9\uac04 \uac00\uacf5\ub41c A2-70 \ub4f1\uae09\uc740 \ud2b9\ud788 \uc911\uc694\ud558\uba70, \uc774\ub294 \uc721\uac01 \ub4dc\ub77c\uc774\ube0c\uac00 \ud5e4\ub4dc\uac00 \ub77c\uc6b4\ub4dc\ub418\uc9c0 \uc54a\uace0 \ub4dc\ub77c\uc774\ubc84 \ud1a0\ud06c\ub97c \uacac\ub51c \uc218 \uc788\ub3c4\ub85d \ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4 \u2014 A2-50\ubcf4\ub2e4 \ub192\uc740 \uac15\ub3c4\uc758 70 \ub4f1\uae09\uc774 \uc774\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud50c\ub79c\uc9c0 \ubcfc\ud2b8 \ubc0f \uae30\ud0c0 \ud5e4\ub4dc \uc2a4\ud0c0\uc77c<\/h3>\n<p>A2-70 \ud50c\ub79c\uc9c0 \ubcfc\ud2b8\ub294 \ud5e4\ub4dc \uc544\ub798\uc5d0 \uc640\uc154 \uba74\uc774 \uc788\ub294 \ud50c\ub79c\uc9c0\ub97c \ud3ec\ud568\ud558\uc5ec \ud074\ub7a8\ud551 \ud558\uc911\uc744 \ub354 \ub113\uc740 \uba74\uc801\uc5d0 \ubd84\uc0b0\uc2dc\ud0a4\uace0, \ub354 \ubd80\ub4dc\ub7ec\uc6b4 \uae30\ud310\uc5d0 \ud5e4\ub4dc\uac00 \ubc15\ud788\ub294 \uc704\ud5d8\uc744 \uc904\uc785\ub2c8\ub2e4. \uc774\ub4e4\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uacf3\uc5d0\uc11c \ud754\ud788 \uc0ac\uc6a9\ub429\ub2c8\ub2e4:<\/p>\n<ul>\n<li>\ud658\uae30 \ubc0f \uacf5\uc870 \ub355\ud2b8 \uace0\uc815<\/li>\n<li>\uc790\ub3d9\ucc28 \ubc30\uae30 \ud50c\ub79c\uc9c0 (A4\uac00 \ud544\uc694\ud558\uc9c0 \uc54a\uc740 \uacbd\uc6b0)<\/li>\n<li>\uc804\uae30 \uc778\ud074\ub85c\uc800 \uc870\ub9bd<\/li>\n<\/ul>\n<p>\uc774 \uc138 \uac00\uc9c0 \uc8fc\uc694 \uc720\ud615 \uc678\uc5d0\ub3c4, A2-70 \ubcfc\ud2b8 \uad6c\uc131\uc5d0\ub294 \ub2e4\uc74c\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4:<\/p>\n<table>\n<thead>\n<tr>\n<th>\uba38\ub9ac \uc2a4\ud0c0\uc77c<\/th>\n<th>\ub4dc\ub77c\uc774\ube0c \uc720\ud615<\/th>\n<th>\uc77c\ubc18 \ud45c\uc900<\/th>\n<th>\uc77c\ubc18\uc801\uc778 \uc801\uc6a9 \ubd84\uc57c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc721\uac01 \uba38\ub9ac<\/td>\n<td>\uc2a4\ud328\ub108\/\ub80c\uce58<\/td>\n<td>DIN 933, ISO 4017<\/td>\n<td>\uad6c\uc870\uc6a9, \uc77c\ubc18\uc6a9<\/td>\n<\/tr>\n<tr>\n<td>\uc18c\ucf13 \ucea1<\/td>\n<td>\uc721\uac01 \ub80c\uce58 (\uc568\ub7f0 \ub80c\uce58)<\/td>\n<td>ISO 4762<\/td>\n<td>\uc815\ubc00 \uae30\uacc4, \ud328\ub110<\/td>\n<\/tr>\n<tr>\n<td>\ub9e4\uc785 \ud3c9\ud3c9\ud55c<\/td>\n<td>\ud544\ub9bd\uc2a4\/\ud1a0\ub974\ud06c\uc2a4\/\uc721\uac01<\/td>\n<td>ISO 10642<\/td>\n<td>\ub9e4\ub9bd\ud615, \ubbf8\uc801 \ub514\uc790\uc778<\/td>\n<\/tr>\n<tr>\n<td>cURL Too many subrequests.<\/td>\n<td>\uc721\uac01 \ud0a4<\/td>\n<td>ISO 7380<\/td>\n<td>\uc800\ud504\ub85c\ud30c\uc77c, \uae54\ub054\ud55c \ub77c\uc778<\/td>\n<\/tr>\n<tr>\n<td>\ud50c\ub79c\uc9c0 \ud5e5\uc2a4<\/td>\n<td>\uc2a4\ud328\ub108<\/td>\n<td>DIN 6921<\/td>\n<td>\ubd84\uc0b0 \ud558\uc911, \uc5f0\uc57d \uae30\uc9c8<\/td>\n<\/tr>\n<tr>\n<td>\uce90\ub9ac\uc9c0 \ubcfc\ud2b8<\/td>\n<td>\uad6c\ub3d9 \uc5c6\uc74c (\uba38\ub9ac \ub3d4\ud615)<\/td>\n<td>DIN 603<\/td>\n<td>\ubaa9\uc7ac, \uac00\uad6c<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/productionscrews.com\/ko\/stud-bolts\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"819\">\uc2a4\ud130\ub4dc \ubcfc\ud2b8<\/a><\/td>\n<td>\ud574\ub2f9 \uc5c6\uc74c (\uba38\ub9ac \uc5c6\uc74c)<\/td>\n<td>DIN 976<\/td>\n<td>\ud50c\ub79c\uc9c0\ud615 \ud30c\uc774\ud504 \uc5f0\uacb0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\uc0b0\uc5c5 \uc751\uc6a9 \ubc0f \uc0ac\uc6a9 \uc0ac\ub840<\/h2>\n<p>a2 70 \ubcfc\ud2b8\ub294 \uc801\uc808\ud55c \uc704\uce58\uc5d0 \uc790\ub9ac \uc7a1\uace0 \uc788\uc2b5\ub2c8\ub2e4: \uc758\ubbf8 \uc788\uac8c \ubd80\uc2dd \uc800\ud56d\uc131\uc774 \uc788\uc73c\uba70 A4-70\/A4-80\uc758 \ube44\uc6a9 \ud504\ub9ac\ubbf8\uc5c4 \uc5c6\uc774, \uc5fc\uc18c\uac00 \ub9ce\uc740 \ud658\uacbd\uc744 \uc81c\uc678\ud55c \ub300\ubd80\ubd84\uc758 \uccb4\uacb0 \uc6a9\ub3c4\uc5d0 \ucda9\ubd84\ud788 \uac15\ub825\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud574\uc591 \ubc0f \uc57c\uc678 \ud658\uacbd \u2014 \uc911\uc694\ud55c \uc8fc\uc758\uc0ac\ud56d\uacfc \ud568\uaed8<\/h3>\n<p>A2-70 \ubcfc\ud2b8\ub294 \ub2e4\uc74c \ud658\uacbd\uc5d0\uc11c \uc798 \uc791\ub3d9\ud569\ub2c8\ub2e4 <strong>\uc57d\ud55c \uc57c\uc678 \ubc0f \uac00\ubcbc\uc6b4 \ud574\uc591 \ud658\uacbd<\/strong>: \uacf5\uc6d0 \uac00\uad6c, \ud45c\uc9c0\ud310, \uc815\uc6d0 \uad6c\uc870\ubb3c, \uac74\ucd95 \uc678\uad00, \uc625\uc0c1 \ud0dc\uc591\uad11 \ud328\ub110. \ud06c\ub85c\ubbb4 \uc0b0\ud654\ubb3c \uc218\ub3d9\uce35\uc774 \ube44, \uc2b5\ub3c4, \ub3c4\uc2dc \ub300\uae30 \uc624\uc5fc \ubb3c\uc9c8\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc8fc\uc758\uc0ac\ud56d: <strong>A2\ub294 \uc9c1\uc811 \ubc14\ub2f7\ubb3c \uce68\uc218 \ub610\ub294 \uc5fc\uc18c \ud3ec\ud654 \ud574\uc548 \uacf5\uae30\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4<\/strong>. \uc774\ub7ec\ud55c \uc870\uac74\uc5d0\uc11c\ub294 \ubab0\ub9ac\ube0c\ub374\uc774 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \uc5fc\uc18c \uc774\uc628\uc774 \uc218\ub3d9\uce35\uc744 \uce68\ud22c\ud558\uc5ec \uc190\uc0c1\uc2dc\ud0a4\uace0, \ud54f\ud305 \ubd80\uc2dd\uc744 \uc720\ubc1c\ud569\ub2c8\ub2e4. \ud574\uc548 \uc124\uce58\uc5d0\uc11c 18\uac1c\uc6d4 \uc774\ub0b4\uc5d0 \ub208\uc5d0 \ub744\ub294 \ud54f\ud305\uc774 \ubc1c\uc0dd\ud558\ub294 A2 \ud328\uc2a4\ub108\ub97c \ubcf8 \uc801\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud658\uacbd\uc5d0\ub294 \ub300\uc2e0 A4-70 \ub610\ub294 A4-80\uc744 \uc9c0\uc815\ud558\uc138\uc694.<\/p>\n<p>\ub0b4\ub959 \uc57c\uc678 \uc0ac\uc6a9? A2-70\uc774 \uac70\uc758 \ud56d\uc0c1 \uc815\ub2f5\uc785\ub2c8\ub2e4 \u2014 \uc544\uc5f0 \ub3c4\uae08 \ud0c4\uc18c\uac15\ubcf4\ub2e4 \ub0b4\uad6c\uc131\uc774 \ub6f0\uc5b4\ub098\uba70, A4\ubcf4\ub2e4 \ud6e8\uc52c \uc800\ub834\ud569\ub2c8\ub2e4.<\/p>\n<h3>\uc2dd\ud488 \uac00\uacf5 \ubc0f \uc81c\uc57d \uc7a5\ube44<\/h3>\n<p>A2-70 \ubcfc\ud2b8\ub294 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4 <strong>\uc2dd\ud488 \uc811\ucd09 \uc7a5\ube44<\/strong> \uc65c\ub0d0\ud558\uba74:<\/p>\n<ol>\n<li>\ube44\ubc18\uc751\uc131 \ud45c\uba74\uc740 \ud0c4\uc18c\uac15\uc774 \ud560 \uc218 \uc788\ub294 \uac83\ucc98\ub7fc \uc2dd\ud488\uc5d0 \uc6a9\ucd9c\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4<\/li>\n<li>\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub294 \ud45c\uc900 CIP(\uc138\ucc99-\ub0b4\ubd80 \uc138\ucc99) \ud654\ud559 \uc0ac\uc774\ud074 \u2014 \ud76c\uc11d \uac00\uc131\uc18c\ub2e4, \uc0b0 \uc138\ucc99, \ucc28\uc544\uc5fc\uc18c\uc0b0\uc5fc \uc18c\ub3c5\uc81c \u2014 \ub97c \uacac\ub525\ub2c8\ub2e4<\/li>\n<li>\uce60\ud574\uc9c0\uac70\ub098 \uc624\uc5fc\ub420 \uc218 \uc788\ub294 \ud45c\uba74 \ucf54\ud305\uc774 \uc5c6\uc2b5\ub2c8\ub2e4<\/li>\n<\/ol>\n<p>\uc2e4\uc81c\ub85c \ub300\ubd80\ubd84\uc758 \uc2dd\ud488 \uac00\uacf5 \uc7a5\ube44 \uaddc\uaca9\uc790\ub294 \ub0b4\ubd80 \ucee8\ubca0\uc774\uc5b4 \ud504\ub808\uc784, \uae30\uacc4 \uac00\ub4dc, \ucd9c\uc785 \ud328\ub110, \ube44\uce68\uc218 \ubd80\ud488\uc5d0 A2-70\uc744 \uae30\ubcf8\uc73c\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc9c1\uc811 CIP\/SIP \uce68\uc9c0 \uad6c\uc5ed\uc774\ub098 \ub18d\ucd95 \uc5fc\uc18c \uc18c\ub3c5\uc81c\uac00 \uc0ac\uc6a9\ub418\ub294 \ud658\uacbd\uc5d0\ub294 A4-70 \ub610\ub294 A4-80\uc73c\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud569\ub2c8\ub2e4<\/p>\n<p>\ud604\uc7a5\uc5d0\uc11c\uc758 \uc2e4\uc6a9\uc801\uc778 \ucc38\uace0 \uc0ac\ud56d: <strong>\uc804\ud574 \uc5f0\ub9c8<\/strong> \uc124\uce58 \uc804\uc5d0 A2 \ud328\uc2a4\ub108\ub97c \uc804\ud574 \uc5f0\ub9c8\ud558\uba74 \uc218\ub3d9\uce35\uc774 \uac15\ud654\ub418\uace0 \uc138\ucc99\uc774 \ub354 \uc26c\uc6cc\uc9d1\ub2c8\ub2e4. \uc81c\uc57d \ub4f1\uae09\uc758 \uc801\uc6a9(ISO \ud074\ub9b0\ub8f8, \ubc14\uc774\uc624\ub9ac\uc561\ud130 \uc778\ud074\ub85c\uc800)\uc5d0\uc11c\ub294 \uc774 \ub2e8\uacc4\uac00 \uc885\uc885 \uc7a5\ube44 OEM\uc5d0 \uc758\ud574 \uc9c0\uc815\ub429\ub2c8\ub2e4<\/p>\n<h3>\uac74\uc124 \ubc0f \uad6c\uc870\uc6a9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158<\/h3>\n<p>\uad6c\uc870\uc6a9 \ubcfc\ud2b8\uc5d0\uc11c A2-70 \ubcfc\ud2b8\ub294 \uc8fc\ub85c \uc5f4\uc5f0\ub3c4\uae08 \ubc0f \uae30\uacc4\uc801 \uc544\uc5f0\ub3c4\uae08 \ud0c4\uc18c\uac15 \ubcfc\ud2b8\uc640 \uacbd\uc7c1\ud569\ub2c8\ub2e4. \uac74\uc124\uc5d0\uc11c A2-70\uc758 \uc7a5\uc810\uc740:<\/p>\n<ul>\n<li>\uae68\uc9c0\uac70\ub098 \uce69\uc774 \uc0dd\uae30\uac70\ub098 \uc124\uce58\uc790 \ucde8\uae09\uc73c\ub85c \uc190\uc0c1\ub420 \uc218 \uc788\ub294 \ucf54\ud305\uc774 \uc5c6\uc2b5\ub2c8\ub2e4<\/li>\n<li>\uad6c\uc870\ubb3c\uc758 \uc218\uba85 \ub3d9\uc548 \uc7ac\ub3c4\uc7a5 \uc5c6\uc774 \uc77c\uad00\ub41c \uc131\ub2a5\uc744 \uc720\uc9c0\ud569\ub2c8\ub2e4<\/li>\n<li>Eurocode 3 (EN 1993)\uc758 \ub300\ubd80\ubd84\uc758 \ub0b4\ub959 \uad6c\uc870\uc6a9 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \ub300\ud55c \ubd80\uc2dd \ub178\ucd9c \ub4f1\uae09 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud569\ub2c8\ub2e4<\/li>\n<\/ul>\n<p>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uad6c\uc870\uc6a9 \ubcfc\ud2b8\ub294 \uc77c\ubd80 \uac74\ucd95 \uc751\uc6a9 \ubd84\uc57c(\ub09c\uac04, \ucee4\ud2bc\uc6d4 \uc575\ucee4, \ub9e4\ub2ec\ub9b0 \ucc9c\uc7a5 \uc2dc\uc2a4\ud15c)\uc5d0\uc11c \uaddc\uaca9\uc5d0 \ub530\ub77c \ud544\uc694\ud558\uba70, \ub178\ucd9c\ub41c \ud328\uc2a4\ub108\ub294 \uad6c\uc870\ubb3c\uc758 \ubbf8\uc801 \uac10\uac01\uacfc \uc7a5\uae30\uc801\uc778 \ubd80\uc2dd \uc800\ud56d\uc131\uc744 \uac16\ucdb0\uc57c \ud569\ub2c8\ub2e4. \uc774\uc5d0 \ub530\ub77c <a href=\"https:\/\/www.nist.gov\/\" target=\"_blank\" rel=\"noopener\">\uc778\ud504\ub77c \ubd80\uc2dd\uc5d0 \uad00\ud55c NIST\uc758 \uc9c0\uce68<\/a>, \ubd80\uc2dd\uc740 \ub9e4\ub144 \ubbf8\uad6d \uacbd\uc81c\uc5d0 1\uc870 2700\uc5b5 \ub2ec\ub7ec \uc774\uc0c1 \uc190\uc2e4\uc744 \ucd08\ub798\ud558\uba70, \ud328\uc2a4\ub108 \ubd80\uc2dd\uc740 \uc778\ud504\ub77c \uc720\uc9c0\ubcf4\uc218 \uc608\uc0b0\uc5d0\uc11c \uc911\uc694\ud55c \uae30\uc5ec\uc790\uc774\uc9c0\ub9cc \uc885\uc885 \uac04\uacfc\ub429\ub2c8\ub2e4.<\/p>\n<hr \/>\n<h2>A2-70\uacfc \ub2e4\ub978 \ub4f1\uae09: \uc120\ud0dd \ubc29\ubc95<\/h2>\n<p>\uc774\uacf3\uc5d0\uc11c \ub300\ubd80\ubd84\uc758 \uaddc\uaca9 \uc624\ub958\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \ud5e4\ub4dc \ub9c8\ud0b9\uc774 \ube44\uc2b7\ud558\uac8c \ubcf4\uc774\uace0, \ubcfc\ud2b8\ub2f9 \uac00\uaca9 \ucc28\uc774\uac00 \uc791\uc544 \ubcf4\uc5ec\uc11c, \uc0ac\ub78c\ub4e4\uc740 \uacfc\ub3c4\ud558\uac8c \uaddc\uaca9\uc744 \uc9c0\uc815\ud558\uac70\ub098(A4-80 \uc804\ubd80), \ubd80\uc871\ud558\uac8c \uc9c0\uc815\ud558\ub294 \uacbd\uc6b0(A2-50 \ub300\uc2e0 A2-70 \ud544\uc694)\uc785\ub2c8\ub2e4<\/p>\n<h3>A2-70\uacfc A4-80: \uc5c5\uadf8\ub808\uc774\ub4dc \uc2dc\uae30<\/h3>\n<p><strong>\uac04\ub2e8\ud55c \ub2f5\ubcc0: \uc5fc\uc18c \ubd80\uc2dd\uc758 \uc704\ud5d8\uc774 \ud604\uc2e4\uc801\uc77c \ub54c A4-80\uc73c\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud558\uc138\uc694<\/strong><\/p>\n<p>A4 \uc2a4\ud14c\uc778\ub9ac\uc2a4(316\uc5d0 \uc0c1\uc751\ud558\ub294 \ub4f1\uae09)\ub294 2~3% \ubab0\ub9ac\ube0c\ub374\uc744 \ud568\uc720\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub294 \uc218\ub3d9\uce35 \ub0b4 \uc5fc\uc18c \uc720\ub3c4 \uad6c\uba4d\uc744 \ucc44\uc6cc \ud655\uc0b0\ub418\uae30 \uc804\uc5d0 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uc2e4\uc9c8\uc801 \uc784\uacc4\uac12: \uadc0\ud558\uc758 \uc801\uc6a9\uc774 \ub2e4\uc74c\uacfc \uac19\ub2e4\uba74:<\/p>\n<ul>\n<li>\uc9c1\uc811 \ubc14\ub2f7\ubb3c \uc811\ucd09 \ub610\ub294 \ud574\uc548 \ub300\uae30\uad8c \ub0b4 \uc57d 1km \uc774\ub0b4<\/li>\n<li>\uc218\uc601\uc7a5 \ub610\ub294 \uc2a4\ud30c \ud658\uacbd(\uc5fc\uc18c \ucc98\ub9ac\ub41c \ubb3c)<\/li>\n<li>\uc5fc\uc18c \ud654\ud569\ubb3c\uc744 \uc0ac\uc6a9\ud558\ub294 \ud654\ud559 \ucc98\ub9ac<\/li>\n<li>\ub3c4\ub85c \uc778\ud504\ub77c\uc758 \uc81c\uc124\uc5fc \ub178\ucd9c<\/li>\n<\/ul>\n<p>\u2026\uadf8\ub807\ub2e4\uba74 A4-80\uc774 \uc801\ud569\ud55c \ub4f1\uae09\uc785\ub2c8\ub2e4. \uac15\ub3c4 \ub4f1\uae09 80(800 N\/mm\u00b2 \uc778\uc7a5\ub825)\uc740 \ub610\ud55c A2-70\uc758 700 N\/mm\u00b2\ubcf4\ub2e4 \uc720\uc6a9\ud55c \uac15\ub3c4 \ud504\ub9ac\ubbf8\uc5c4\uc744 \uc81c\uacf5\ud558\uba70, \uc774\ub294 \uace0\ud558\uc911 \uc5f0\uacb0\ubd80\uc5d0\uc11c \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc2e4\uc81c\ub85c, a2 70 \ubcfc\ud2b8\ub294 \uc0b0\uc5c5 \ubc0f \uac74\uc124 \uace0\uc815\uc6a9 \uc57d 80%\ub97c \ucee4\ubc84\ud569\ub2c8\ub2e4. A4-80\uc740 \uc5fc\uc18c \ub178\ucd9c\uc774 \uc911\uc694\ud55c \ub098\uba38\uc9c0 20%\ub97c \ucee4\ubc84\ud569\ub2c8\ub2e4.<\/p>\n<h3>A2-70 \ub300 A2-50: \ud63c\ub3d9\ud558\uc9c0 \ub9c8\uc138\uc694<\/h3>\n<p>\uc774\uac83\uc774 \ud604\uc7a5\uc5d0\uc11c \uac00\uc7a5 \ud754\ud55c \ud63c\ub3d9\uc785\ub2c8\ub2e4. A2-50\uc740 <strong>\ub3d9\uc77c\ud55c \uc7ac\uc9c8<\/strong> A2-70\uacfc \ub3d9\uc77c\ud55c 304\uc5d0 \uc0c1\uc751\ud558\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc774\uc9c0\ub9cc \u2014 \ub3d9\uc77c\ud55c 304\uc5d0 \uc0c1\uc751\ud558\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \u2014 \ub0c9\uac04 \uac00\uacf5 \ub300\uc2e0 \uc5f0\uc2e0 \ucc98\ub9ac\ub41c \uc5f0\uc131 \uc0c1\ud0dc\ub85c \uacf5\uae09\ub429\ub2c8\ub2e4.<\/p>\n<p>\uacb0\uacfc: A2-50\uc740 \uc778\uc7a5 \uac15\ub3c4 500 N\/mm\u00b2\uc5d0 \ubd88\uacfc\ud558\uba70, \uc774\ub294 ISO \uaddc\uaca9\uc758 5.8 \ud0c4\uc18c\uac15 \ubcfc\ud2b8\ubcf4\ub2e4 \uc57d\ud569\ub2c8\ub2e4. \uac00\ubcbc\uc6b4 \uc6a9\ub3c4, \ube44\uad6c\uc870\uc801 \uc801\uc6a9(\ud074\ub798\ub529 \ub098\uc0ac, \uc804\uae30 \ud328\ub110, \ud2b8\ub9bc \uace0\uc815)\uc5d0 \uc801\ud569\ud558\uc9c0\ub9cc, <strong>\uc808\ub300<\/strong> \ud558\uc911 \uc9c0\uc9c0 \uc870\uc778\ud2b8\uc5d0 A2-70 \ubcfc\ud2b8\uac00 \uc9c0\uc815\ub41c \uacf3\uc5d0\uc11c\ub294 \ub300\uccb4\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n<p>\ubb38\uc81c: \uc678\uad00\uc774 \ub3d9\uc77c\ud569\ub2c8\ub2e4. \ub458 \ub2e4 \uad11\ud0dd\uc774 \ub098\uace0 \ube44\uc790\uc131\uc801\uc774\uba70 \uc740\ud68c\uc0c9\uc785\ub2c8\ub2e4. \ubcfc\ud2b8 \uba38\ub9ac\uc758 \ud45c\uc2dc\ub294 \uc720\uc77c\ud558\uac8c \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uad6c\ubcc4 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n<h3>A2-70 \ub300 \ub4f1\uae09 8.8 \ud0c4\uc18c\uac15<\/h3>\n<table>\n<thead>\n<tr>\n<th>\uc18d\uc131<\/th>\n<th>A2-70 \uc2a4\ud14c\uc778\ub9ac\uc2a4<\/th>\n<th>8.8 \ud0c4\uc18c\uac15<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc778\uc7a5 \uac15\ub3c4<\/td>\n<td>700 N\/mm\u00b2<\/td>\n<td>800 N\/mm\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\uc99d\uba85 \uc778\uc7a5 \uac15\ub3c4(\ud56d\ubcf5)<\/td>\n<td>450 N\/mm\u00b2<\/td>\n<td>640 N\/mm\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\ubd80\uc2dd \ubc29\uc9c0<\/td>\n<td>\uc6b0\uc218 (\ucf54\ud305 \ud544\uc694 \uc5c6\uc74c)<\/td>\n<td>\ubd88\ub7c9 (\ucf54\ud305 \ud544\uc694)<\/td>\n<\/tr>\n<tr>\n<td>\uc790\uc131<\/td>\n<td>No<\/td>\n<td>\uc608<\/td>\n<\/tr>\n<tr>\n<td>\ub0b4\uc5f4\uc131<\/td>\n<td>\uc57d 870\u00b0C\uae4c\uc9c0 \uc6b0\uc218<\/td>\n<td>\ucf54\ud305\uc5d0 \uc758\ud574 \uc81c\ud55c\ub428<\/td>\n<\/tr>\n<tr>\n<td>\uac00\uacf5 \uc704\ud5d8<\/td>\n<td>\ubcf4\ud1b5 (\ubc29\uccad\uc81c \uc0ac\uc6a9)<\/td>\n<td>\ub0ae\uc74c<\/td>\n<\/tr>\n<tr>\n<td>\ube44\uc6a9 (\ubcfc\ud2b8\ub2f9)<\/td>\n<td>2~4\ubc30 \ub354 \ub192\uc74c<\/td>\n<td>\uae30\uc900\uc120<\/td>\n<\/tr>\n<tr>\n<td>\uc7ac\ud65c\uc6a9 \uac00\ub2a5\uc131<\/td>\n<td>\ub192\uc74c (&gt;60% \uc7ac\ud65c\uc6a9 \ud568\uc720\ub7c9 \uc77c\ubc18\uc801)<\/td>\n<td>\ubcf4\ud1b5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>8.8 \ub4f1\uae09 \ud0c4\uc18c\uac15 \ubcfc\ud2b8\ub294 \uc778\uc7a5 \uac15\ub3c4\uc640 \ud56d\ubcf5 \uac15\ub3c4 \ubaa8\ub450 \ub354 \uac15\ud558\uba70 \u2014 \uadf8\ub9ac\uace0 \ub2e8\uc704\ub2f9 \ud6e8\uc52c \uc800\ub834\ud569\ub2c8\ub2e4. \ub300\uc2e0 A2 70 \ubcfc\ud2b8\ub97c \uc120\ud0dd\ud558\ub294 \uc774\uc720\ub294 \uc804\uc801\uc73c\ub85c \ud658\uacbd\uc5d0 \ub2ec\ub824 \uc788\uc2b5\ub2c8\ub2e4: \uc870\uc778\ud2b8\uac00 \uc2b5\uae30, \ub300\uae30 \ubd80\uc2dd \ub610\ub294 \ud0c4\uc18c\uac15\uc758 \ubcf4\ud638 \ucf54\ud305\uc744 \uacf5\uaca9\ud560 \uc218 \uc788\ub294 \ud654\ud559 \ud658\uacbd\uc5d0 \ub178\ucd9c\ub420 \uacbd\uc6b0, \uc218\uba85 \ube44\uc6a9 \uacc4\uc0b0\uc740 \uac70\uc758 \ud56d\uc0c1 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac00 \uc720\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n<hr \/>\n<h2>A2-70 \uc124\uce58: \ud1a0\ud06c, \ub4dc\ub9b4 \ud06c\uae30, \ucd5c\uc120\uc758 \uc2e4\ucc9c \ubc29\ubc95<\/h2>\n<p>A2 70 \ubcfc\ud2b8 \uc870\ub9bd\uccb4\uc758 \uc801\uc808\ud55c \uc124\uce58\ub294 \ud0c4\uc18c\uac15 \ubcfc\ud2b8 \uc124\uce58\uc640 \ub2ec\ub9ac \uac00\uacf5 \uc704\ud5d8\uacfc \uc724\ud65c\uc720\ub97c \uc911\uc2ec\uc73c\ub85c \uc0ac\ub78c\ub4e4\uc744 \ub180\ub77c\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<figure><img decoding=\"async\" style=\"width: 100%; height: auto;\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/04\/03-howto-2.jpg\" alt=\"\uace0\ud488\uc9c8 \ud50c\ub79c\uc9c0 \ubcfc\ud2b8\uc640 \uc0b0\uc5c5\uc6a9 \ub098\uc0ac\uac00 \uc81c\uc870 \uc791\uc5c5\uc7a5\uc5d0\uc11c \uc870\ub9bd\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc815\ubc00\uc131\uacfc \ub0b4\uad6c\uc131\uc774 \ub2e4\uc591\ud55c \uc0b0\uc5c5\uc6a9 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uccb4\uacb0\uad6c\ub97c \uc0dd\uc0b0\ud558\ub294 \ud575\uc2ec\uc785\ub2c8\ub2e4.\" \/><\/figure>\n<h3>\ud1a0\ud06c \uac12\uacfc \ud074\ub7a8\ud551 \ud798<\/h3>\n<p>A2-70 \uc721\uac01 \ubcfc\ud2b8 \uad8c\uc7a5 \ud1a0\ud06c \uac12 (ISO 898-1 \uc720\ub3c4, \ud45c\uc900 \ud53c\uce58, \uac74\uc870 \uc0c1\ud0dc, \ub9c8\ucc30 \uacc4\uc218 \u03bc = 0.12):<\/p>\n<table>\n<thead>\n<tr>\n<th>\uba85\ubaa9 \ud06c\uae30<\/th>\n<th>\ud53c\uce58 (\uac70\uce5c)<\/th>\n<th>\uc99d\uba85 \ud558\uc911 (kN)<\/th>\n<th>\ud1a0\ud06c (Nm) \u2014 \uac74\uc870<\/th>\n<th>\ud1a0\ud06c (Nm) \u2014 \uc724\ud65c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M6<\/td>\n<td>1.0<\/td>\n<td>8.8<\/td>\n<td>9\u201311<\/td>\n<td>7\u20138<\/td>\n<\/tr>\n<tr>\n<td>M8<\/td>\n<td>1.25<\/td>\n<td>16.2<\/td>\n<td>22\u201325<\/td>\n<td>16\u201318<\/td>\n<\/tr>\n<tr>\n<td>M10<\/td>\n<td>1.5<\/td>\n<td>25.6<\/td>\n<td>43\u201350<\/td>\n<td>32\u201337<\/td>\n<\/tr>\n<tr>\n<td>M12<\/td>\n<td>1.75<\/td>\n<td>37.5<\/td>\n<td>74\u201386<\/td>\n<td>55\u201364<\/td>\n<\/tr>\n<tr>\n<td>M16<\/td>\n<td>2.0<\/td>\n<td>66.7<\/td>\n<td>180\u2013210<\/td>\n<td>135\u2013155<\/td>\n<\/tr>\n<tr>\n<td>M20<\/td>\n<td>2.5<\/td>\n<td>106<\/td>\n<td>350\u2013400<\/td>\n<td>260\u2013300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\uc911\uc694:<\/strong> \uc774 \uac12\ub4e4\uc740 \ucc38\uace0\uc6a9\uc785\ub2c8\ub2e4. \ud2b9\uc815 \uc81c\ud488, \uc724\ud65c\uc81c, \uae30\ud310 \uc870\ud569\uc5d0 \ub300\ud574 \ud56d\uc0c1 \uc81c\uc870\uc5c5\uccb4\uac00 \uacf5\uac1c\ud55c \ud1a0\ud06c \ucc28\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc138\uc694.<\/p>\n<h3>\ubc29\uccad \ubc29\uc9c0: \ub300\ubd80\ubd84\uc758 \uac00\uc774\ub4dc\uac00 \uac74\ub108\ub6f0\ub294 \uc911\uc694\ud55c \ub2e8\uacc4<\/h3>\n<p><strong>\uac24\ub9c1\uc740 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uccb4\uacb0\uad6c\ub97c \uc124\uce58\ud560 \ub54c \uac00\uc7a5 \ud754\ud55c \uc2e4\ud328 \uc6d0\uc778\uc785\ub2c8\ub2e4.<\/strong> \uac24\ub9c1\uc740 \uc124\uce58 \uc911 \ub9c8\ucc30\ub85c \uc778\ud574 \ubcfc\ud2b8\uc640 \ub108\ud2b8\uc758 \uc0b0\ud654\uce35\uc774 \uc11c\ub85c \uc6a9\uc811\ub418\uc5b4 \ubc1c\uc0dd\ud558\uba70, \uacb0\uacfc\ub294 \ubcfc\ud2b8\uac00 \uc870\uc784 \uc911 \uba48\ucd98 \uac83\ucc98\ub7fc \ubcf4\uc774\uace0, \uacc4\uc18d \uc2dc\ub3c4\ud558\uba74 \ub098\uc0ac\uac00 \ub04a\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n<p>A2-70 \ubcfc\ud2b8\ub294 \uc0b0\ud654\uce35\uc774 \ub3d9\uc77c\ud558\uae30 \ub54c\ubb38\uc5d0 \ud0c4\uc18c\uac15\ubcf4\ub2e4 \uac00\uacf5\uc774 \ub354 \uc27d\uc9c0 \uc54a\uc73c\uba70, A2 \ub108\ud2b8\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud560 \ub54c \uac00\uacf5\uc774 \ub354 \uc27d\uac8c \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac00\uacf5 \ubc29\uc9c0:<\/p>\n<ol>\n<li>\ud56d\uc0c1 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624 <a href=\"https:\/\/productionscrews.com\/ko\/bolt-nut-and\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"821\">\uc62c\ubc14\ub978 \ub108\ud2b8 \ub4f1\uae09 \u2014 A2 \ubcfc\ud2b8\uc6a9 A2 \ub108\ud2b8<\/a> - \uc6d0\ub798 \uc5b8\uc5b4: \uc601\uc5b4.\n- \uc5c4\uaca9\ud55c \ubc88\uc5ed, \ud55c\uad6d \ud604\uc9c0 \ubb38\ubc95\uc5d0 \ub9de\ucda4.\n- \ubc88\uc5ed\ub41c \ud14d\uc2a4\ud2b8\ub9cc \ucd9c\ub825.\n- \ubc88\uc5ed\ub41c \ud14d\uc2a4\ud2b8\uc5d0 \uad6d\uac00 \ub610\ub294 \uc9c0\uc5ed \uc815\ubcf4\ub97c \ud3ec\ud568\ud558\uc9c0 \uc54a\uc73c\uba70, \"\ud55c\uad6d\"\uc73c\ub85c \ubaa8\ub4e0 \ub300\uc0c1 \uad6d\uac00 \uc815\ubcf4\ub97c \ubcc0\uacbd.\n- \uc608\ub97c \ub4e4\uc5b4, \"factory in China\" \ub610\ub294 \"Made in Vietnam\"\uc740 \uadf8\ub300\ub85c \uc720\uc9c0.\n- \ubaa8\ub4e0 \ud14d\uc2a4\ud2b8\ub294 \ud55c\uad6d\uc5b4\ub85c \uc791\uc131\ud558\uba70, \ud575\uc2ec \ub2e8\uc5b4\ub294 \uc815\ud655\ud558\uac8c \ubc88\uc5ed.\n- \uc124\uba85, \ub9c8\ud06c\ub2e4\uc6b4, \ucd94\uac00 \ud14d\uc2a4\ud2b8 \uc5c6\uc74c.<\/li>\n<li>\uc870\ub9bd \uc804\uc5d0 \ub098\uc0ac\uc0b0\uc5d0 \ubc29\uccad\uc720\ub97c \ubc14\ub974\uc138\uc694. \ubab0\ub9ac\ube0c\ub374 \ub514\uc124\ud30c\uc774\ub4dc(MoS\u2082) \ud398\uc774\uc2a4\ud2b8 \ub610\ub294 PTFE \uae30\ubc18 \ub098\uc0ac\uc0b0 \uc724\ud65c\uc81c\uac00 \ubaa8\ub450 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4<\/li>\n<li>\uc124\uce58 \uc18d\ub3c4\ub97c \uc904\uc774\uc138\uc694 \u2014 \uace0\uc18d \uc784\ud329\ud2b8 \ub4dc\ub77c\uc774\ubc84\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub098\uc0ac\uc0b0\uc758 \uac00\uacf5 \uc704\ud5d8\uc744 \uae09\uaca9\ud788 \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4<\/li>\n<li>\uc774\ubbf8 \uac00\uacf5\ub41c \ub098\uc0ac\uc0b0\uc5d0 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ubcfc\ud2b8\uc640 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub108\ud2b8\ub97c \ud568\uaed8 \uc0ac\uc6a9\ud558\uc9c0 \ub9c8\uc138\uc694 \u2014 \uc190\uc0c1\ub41c \ub098\uc0ac\uc0b0\uc740 \uccad\uc18c\ud558\uac70\ub098 \uad50\uccb4\ud55c \ud6c4 \uc7ac\uc124\uce58\ud558\uc138\uc694<\/li>\n<\/ol>\n<p>\uc2e4\uc81c\ub85c, Jet-Lube SS-30 \ub610\ub294 \uc774\uc640 \uc720\uc0ac\ud55c \uc587\uc740 \ucf54\ud305\uc744 \uc801\uc6a9\ud558\uba74 \uc0dd\uc0b0 \uc870\ub9bd \ub77c\uc778\uc5d0\uc11c \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub098\uc0ac\uc0b0 \uac00\uacf5 \uc2e4\ud328\ub97c 90% \uc774\uc0c1 \uc904\uc77c \uc218 \uc788\uc74c\uc744 \ubc1c\uacac\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\ud074\ub9ac\uc5b4\ub7f0\uc2a4 \ubc0f \ud0ed \ub4dc\ub9b4 \ud06c\uae30<\/h3>\n<p>A2 70 \ubcfc\ud2b8 \uc124\uce58\ub97c \uc704\ud55c \ud45c\uc900 \ubbf8\ud130\ubc95 \ud074\ub9ac\uc5b4\ub7f0\uc2a4 \ubc0f \ud30c\uc77c\ub7ff \uad6c\uba4d \ud06c\uae30 (ISO 273 \uae30\uc900):<\/p>\n<table>\n<thead>\n<tr>\n<th>\ubcfc\ud2b8 \ud06c\uae30<\/th>\n<th>\ub098\uc0ac \ud53c\uce58<\/th>\n<th>\ud074\ub9ac\uc5b4\ub7f0\uc2a4 \uad6c\uba4d (\uc911\uac04 \ub9de\ucda4)<\/th>\n<th>\ud0ed \ub4dc\ub9b4 (\uac15\ucca0 \ub108\ud2b8 \ub098\uc0ac\uc0b0\uc6a9)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M5<\/td>\n<td>0.8<\/td>\n<td>5.5 mm<\/td>\n<td>4.2 mm<\/td>\n<\/tr>\n<tr>\n<td>M6<\/td>\n<td>1.0<\/td>\n<td>6.6 mm<\/td>\n<td>5.0 mm<\/td>\n<\/tr>\n<tr>\n<td>M8<\/td>\n<td>1.25<\/td>\n<td>9.0 mm<\/td>\n<td>6.8 mm<\/td>\n<\/tr>\n<tr>\n<td>M10<\/td>\n<td>1.5<\/td>\n<td>11.0 mm<\/td>\n<td>8.5 mm<\/td>\n<\/tr>\n<tr>\n<td>M12<\/td>\n<td>1.75<\/td>\n<td>13.5 mm<\/td>\n<td>10.2 mm<\/td>\n<\/tr>\n<tr>\n<td>M16<\/td>\n<td>2.0<\/td>\n<td>18.0 mm<\/td>\n<td>14.0 mm<\/td>\n<\/tr>\n<tr>\n<td>M20<\/td>\n<td>2.5<\/td>\n<td>22.0 mm<\/td>\n<td>17.5 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc5d0 \ud0ed \ub4dc\ub9b4\ub9c1\uc744 \ud560 \ub54c\ub294 \ud2b9\ud788 \ube60\ub974\uac8c \uacbd\ud654\ub418\ubbc0\ub85c, \ub0a0\uce74\ub85c\uc6b4 \uace0\uc18d \uac15(HSS) \ub610\ub294 \ucf54\ubc1c\ud2b8 \ub4dc\ub9b4 \ube44\ud2b8, \ub290\ub9b0 \ud68c\uc804\uc218, \uc77c\uc815\ud558\uace0 \uac15\ud55c \uc555\ub825, \uc808\ub2e8 \uc720\uccb4\ub97c \uc0ac\uc6a9\ud558\uc138\uc694. \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc5d0\uc11c \uba48\ucd94\uac70\ub098 \uba48\ucd94\uba74 \uc7ac\ub8cc\uac00 \uc791\uc5c5 \uacbd\ud654\ub418\uc5b4 \ub4dc\ub9b4\uc774 \uc190\uc0c1\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc9c0\uc801\ub41c \ubc14\uc5d0 \ub530\ub974\uba74 <a href=\"https:\/\/www.engineeringtoolbox.com\/\" target=\"_blank\" rel=\"noopener\">\uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ud234\ubc15\uc2a4\uc758 \uccb4\uacb0\uad6c \ucc38\uace0 \ud45c<\/a>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108\uc758 \ud1a0\ud06c-\uc7a5\ub825 \uad00\uacc4\ub294 \ud45c\uba74 \uc0c1\ud0dc\uc758 \uac00\ubcc0\uc131\uc73c\ub85c \uc778\ud574 \ud0c4\uc18c\uac15\ubcf4\ub2e4 \ub354 \uac00\ubcc0\uc801\uc774\ubbc0\ub85c, \uc911\uc694\ud55c \uc870\uc778\ud2b8\uc5d0\uc11c\ub294 \ud56d\uc0c1 \ud1a0\ud06c \uac10\uc0ac\ub97c \ud1b5\ud574 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<hr \/>\n<h2>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ub098\uc0ac\ubabb\uc758 \ubbf8\ub798 \ub3d9\ud5a5 (2026\ub144 \uc774\ud6c4)<\/h2>\n<p>a2 70 \ubcfc\ud2b8 \uc81c\ud488 \uc2dc\uc7a5\uc740 \uc9c0\uc18d \uac00\ub2a5\uc131, \uacf5\uae09\ub9dd \uc9c0\uc5ed\ud654, \uc0b0\uc5c5 \uc870\ub2ec\uc758 \ub514\uc9c0\ud138\ud654\ub77c\ub294 \ub354 \ub113\uc740 \ucd94\uc138\uc640 \ud568\uaed8 \ubc1c\uc804\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\uc9c0\uc18d \uac00\ub2a5\uc131 \ubc0f \uc7ac\ud65c\uc6a9 \uc18c\uc7ac<\/h3>\n<p>\uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc740 \uc9c0\uad6c\uc0c1\uc5d0\uc11c \uac00\uc7a5 \ub9ce\uc774 \uc7ac\ud65c\uc6a9\ub418\ub294 \uc7ac\ub8cc \uc911 \ud558\ub098\uc785\ub2c8\ub2e4 \u2014 304\/316 \uc0dd\uc0b0\uc5d0\uc11c\uc758 \uae00\ub85c\ubc8c \ud3c9\uade0 \uc7ac\ud65c\uc6a9 \ud568\ub7c9\uc740 \ud604\uc7ac \ub9ce\uc740 \uc2dc\uc7a5\uc5d0\uc11c 60%\ub97c \ucd08\uacfc\ud558\uba70, \uc77c\ubd80 \ud2b9\uc218 \uc81c\ucca0\uc18c\ub294 80% \uc774\uc0c1\uc744 \ubcf4\uace0\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc810\uc810 \ub354 \uc0ac\uc591 \uacb0\uc815\uc758 \uc911\uc694\ud55c \uc694\uc18c\uac00 \ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4: LEED v4.1 \ub610\ub294 BREEAM \ud504\ub808\uc784\uc6cc\ud06c \ud558\uc5d0\uc11c \uc791\uc5c5\ud558\ub294 \uac74\ucd95\uac00\uc640 \uc5d4\uc9c0\ub2c8\uc5b4\ub4e4\uc740 \uc7ac\ud65c\uc6a9 \ud568\ub7c9\uc774 \ubb38\uc11c\ud654\ub41c \ud328\uc2a4\ub108\uc640 \ud658\uacbd \uc81c\ud488 \uc120\uc5b8\uc11c(EPD)\ub97c \uc9c0\uc815\ud568\uc73c\ub85c\uc368 \uc790\uc7ac \ud06c\ub808\ub527\uc744 \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc5d0 \ub530\ub77c <a href=\"https:\/\/www.worldstainless.org\/sustainability\/\" target=\"_blank\" rel=\"noopener\">\uad6d\uc81c \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8 \ud3ec\ub7fc 2024 \uc9c0\uc18d \uac00\ub2a5\uc131 \ubcf4\uace0\uc11c<\/a>\uc804 \uc138\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc0dd\uc0b0 \ub2a5\ub825\uc740 2030\ub144\uae4c\uc9c0 15% \uc131\uc7a5\ud560 \uac83\uc73c\ub85c \uc608\uc0c1\ub418\uba70, \uc778\ub3c4\uc640 \ub3d9\ub0a8\uc544\uc2dc\uc544\uc5d0\uc11c\uc758 \uc0c1\ub2f9\ud55c \uc6a9\ub7c9 \uc99d\ub300\ub294 \ud0c4\uc18c\uac15 \ub300\uccb4\ud488\uc5d0 \ube44\ud574 A2 \ub4f1\uae09 \ud328\uc2a4\ub108\uc758 \ube44\uc6a9\uc744 \ub354\uc6b1 \ub0ae\ucd94\ub294 \uc5ed\ud560\uc744 \ud560 \uac83\uc785\ub2c8\ub2e4. \uc7a5\uae30\uc801\uc778 \uac00\uaca9 \ucd94\uc138\ub294 \uac00\uaca9\uc5d0 \ubbfc\uac10\ud55c \uac74\uc124 \uc6a9\ub3c4\uc5d0\uc11c\ub3c4 A2 70 \ubcfc\ud2b8 \uc0ac\uc591\uc758 \ub354 \ub113\uc740 \ucc44\ud0dd\uc744 \uc720\ub9ac\ud558\uac8c \ub9cc\ub4ed\ub2c8\ub2e4.<\/p>\n<h3>\uc0b0\uc5c5 4.0: \ub514\uc9c0\ud138 \ub9c8\ud0b9 \ubc0f \uc2a4\ub9c8\ud2b8 \uccb4\uacb0<\/h3>\n<p><strong>\uac1c\ubcc4 \ubcfc\ud2b8 \uba38\ub9ac\uc5d0 \ub808\uc774\uc800 \ub9c8\ud0b9\ub41c QR \ucf54\ub4dc \ubc0f DMC(\ub370\uc774\ud130 \ub9e4\ud2b8\ub9ad\uc2a4 \ucf54\ub4dc) \ud45c\uc2dc<\/strong> \uace0\ubd80\uac00\uac00\uce58 \uc751\uc6a9 \ubd84\uc57c(\ud574\uc678, \ud56d\uacf5\uc6b0\uc8fc, \uc6d0\uc790\ub825)\uc5d0\uc11c \uc810\ucc28 \ub4f1\uc7a5\ud558\uae30 \uc2dc\uc791\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ud5e4\ub4dc \ub9c1\ud06c\ub97c \ud1b5\ud574 \uc790\uc7ac \uc99d\uba85\uc11c, \uc5f4 \ubc30\uce58, \uae30\uacc4 \uc2dc\ud5d8 \ubcf4\uace0\uc11c\ub97c \uc9c1\uc811 \uc2a4\uce94\ud558\uc5ec \u2014 \uc885\uc774 \uae30\ub85d \uc5c6\uc774 \uc644\uc804\ud55c \ucd94\uc801 \uac00\ub2a5\uc131\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<p>a2 70 \ubcfc\ud2b8 \uc81c\ud488\uc774 \uacf5\uae09\ud558\ub294 \uac74\uc124 \ubc0f \uc77c\ubc18 \uc0b0\uc5c5 \uc2dc\uc7a5\uc5d0\uc11c\ub294 \uc774 \ucd94\uc138\uac00 \uc544\uc9c1 \ucd08\uae30 \ub2e8\uacc4\uc774\uc9c0\ub9cc \uc8fc\ubaa9\ud560 \ub9cc\ud558\ub2e4. \uc704\uc870 \uccb4\uacb0\uad6c(\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub4f1\uae09\uc5d0\uc11c \ubb38\uc11c\ud654\ub41c \ubb38\uc81c\uc778 \uac00\uc9dc A4-70\uc774 A2-70\uc73c\ub85c \uacf5\uae09\ub418\uac70\ub098 A2-50\uc774 A2-70\uc73c\ub85c \uc798\ubabb \ud45c\uae30\ub41c \uacbd\uc6b0)\ub97c \ub2e4\ub8e8\ub294 \uc870\ub2ec\ud300\uc740 \ud5a5\ud6c4 5\ub144 \uc774\ub0b4\uc5d0 \ub514\uc9c0\ud138 \ub9c8\ud0b9\uc744 \ud45c\uc900\uc73c\ub85c \ucd94\uc9c4\ud560 \uac00\ub2a5\uc131\uc774 \ub192\ub2e4.<\/p>\n<p>\ubaa9\ud45c \uc9c0\uc810\uc5d0\uc11c \uc0c9\uc0c1\uc774 \ubcc0\ud558\ub294 \uc0c9\uc0c1 \uc640\uc154 \ub610\ub294 \ud654\ud559 \uc9c0\uc2dc\uae30\ub97c \ud1b5\ud55c \ud1a0\ud06c \ud45c\uc2dc <a href=\"https:\/\/productionscrews.com\/ko\/essential-guide-to-fastener-installation-why-clamp-load-beats-torque-every-time\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"822\">\ud074\ub7a8\ud504 \ud558\uc911<\/a> \ud488\uc9c8\uc5d0 \uc911\uc694\ud55c \uc124\uce58\uc5d0 \ub300\ud55c \uc0ac\uc6a9\ub3c4 \uc99d\uac00\ud558\uace0 \uc788\uc73c\uba70 \u2014 \uc124\uce58 \uacfc\uc815\uc5d0\uc11c \ucd94\uce21\uc744 \uc81c\uac70\ud569\ub2c8\ub2e4.<\/p>\n<hr \/>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>\ubcfc\ud2b8\uc5d0\uc11c A2-70\uc774 \uc758\ubbf8\ud558\ub294 \ubc14\ub294 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n<p>A2-70\uc740 \uc758\ubbf8\ud569\ub2c8\ub2e4 <a href=\"https:\/\/productionscrews.com\/ko\/stainless-steel-bolts\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"820\">\ubcfc\ud2b8\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8 \ub4f1\uae09\uc73c\ub85c \ub9cc\ub4e4\uc5b4\uc84c\uc2b5\ub2c8\ub2e4.<\/a> A2(304 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uc5d0 \ud574\ub2f9)\uc774\uba70, \uc18d\uc131 \ub4f1\uae09 70\uc744 \ub2ec\uc131\ud558\uc600\uc73c\uba70, \uc774\ub294 \ucd5c\uc18c \uc778\uc7a5 \uac15\ub3c4 700 N\/mm\u00b2 \ubc0f \ucd5c\uc18c \ud56d\ubcf5 \uac15\ub3c4 450 N\/mm\u00b2\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. ISO 3506\uc5d0 \ub530\ub77c \uc774\uc640 \uac19\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4.<\/p>\n<h3>A2-70\uc758 ASTM \ub4f1\uac00\ud488\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n<p>A2 70 \ubcfc\ud2b8\uc5d0 \uac00\uc7a5 \uac00\uae4c\uc6b4 ASTM \ub4f1\uac00\ud488\uc740 <strong>ASTM F593 \ud569\uae08 \uadf8\ub8f9 1 (304\/305 \uc2a4\ud14c\uc778\ub9ac\uc2a4), \uc870\uac74 CW<\/strong> (\ub0c9\uac04 \uac00\uacf5). \uc870\uac74 CW\ub294 ISO 3506 \ud074\ub798\uc2a4 70 \uc18d\uc131 \ub4f1\uae09\uacfc \uc720\uc0ac\ud55c \uac15\ub3c4 \uc218\uc900\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. ASTM\uacfc ISO \uc778\uc99d\uc740 \uc9c1\uc811 \uad50\ud658\ud560 \uc218 \uc5c6\uc73c\uba70 \u2014 \uc911\uc694\ud55c \uc6a9\ub3c4\uc5d0\uc11c\ub294 \uc5b4\ub5a4 \ud45c\uc900\uc774 \uc694\uad6c\ub418\ub294\uc9c0 \ud655\uc778\ud558\uace0 \ud574\ub2f9 \ud45c\uc900\uc5d0 \uc778\uc99d\ub41c \ubcfc\ud2b8\ub97c \uad6c\ube44\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h3>\uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15 \ub108\ud2b8\uc640 \ud568\uaed8 A2-70 \ubcfc\ud2b8\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n<p>\ub124 \u2014 \uadf8\ub9ac\uace0 \uadf8\ub807\uac8c \ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4. \ud638\ud658\uc131\uc744 \uc704\ud574 A2 \ub108\ud2b8\uc640 A2-70 \ubcfc\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc138\uc694. \ub4f1\uae09\uc774 \uc11e\uc778 \uacbd\uc6b0(\uc608: A4 \ub108\ud2b8\uc640 A2 \ubcfc\ud2b8)\ub294 \ubd80\uc2dd \uad00\uc810\uc5d0\uc11c \uc77c\ubc18\uc801\uc73c\ub85c \ud5c8\uc6a9\ub418\uc9c0\ub9cc, \ud45c\uc900\uc774 \uc544\ub2c8\uba70 \ud488\uc9c8\uc774 \uc911\uc694\ud55c \uc870\ub9bd \uc2dc \ubb38\uc11c \ubb38\uc81c\ub97c \uc77c\uc73c\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc2a4\ud14c\uc778\ub9ac\uc2a4-\uc2a4\ud14c\uc778\ub9ac\uc2a4 \ub098\uc0ac\uc0b0 \uc870\ub9bd \uc2dc\uc5d0\ub294 \ud56d\uc0c1 \ubc29\uccad\uc81c \ub610\ub294 \ub098\uc0ac \uc724\ud65c\uc81c\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac00\uacf5\uc744 \ubc29\uc9c0\ud558\uc138\uc694.<\/p>\n<h3>A2-70 \ubcfc\ud2b8\ub294 \uc790\uc131\uc774 \uc788\ub098\uc694?<\/h3>\n<p>\uc544\ub2c8\uc694. A2 \uc2a4\ud14c\uc778\ub9ac\uc2a4\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uacc4\uc774\uba70 <strong>\uc5b4\ub2d0\ub9c1 \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ube44\uc790\uc131\uc785\ub2c8\ub2e4<\/strong>. \uadf8\ub7ec\ub098 A2-70 \ubcfc\ud2b8 \uc81c\uc870 \uacfc\uc815\uc5d0\uc11c \ub0c9\uac04 \uac00\uacf5\uc774 \ubbf8\uc138\ud55c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub97c \uc720\ubc1c\ud560 \uc218 \uc788\uc5b4, \uc774\ub85c \uc778\ud574 \uccb4\uacb0\uad6c\uac00 \uc57d\uac04 \uc790\uc131\uc744 \ub768 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc815\uc0c1\uc774\uba70 \uc7ac\ub8cc \uacb0\ud568\uc744 \uc758\ubbf8\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc9c4\uc815\ud55c \uc790\uc131 \uc2a4\ud14c\uc778\ub9ac\uc2a4(\ud398\ub77c\uc774\ud2b8 \ub610\ub294 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub4f1\uae09)\ub294 \ub2e4\ub974\uac8c \ubcf4\uc774\uba70 \u2014 \ube44\uc790\uc131 \uccb4\uacb0\uad6c\uac00 \ud544\uc694\ud558\ub2e4\uba74 A2 \ub610\ub294 A4\ub97c \uc9c0\uc815\ud558\uace0 \uacf5\uae09\uc5c5\uccb4\uc640 \ud655\uc778\ud558\uc138\uc694.<\/p>\n<h3>A2-70 M8 \ubcfc\ud2b8\uc5d0 \uc801\ud569\ud55c \ub4dc\ub9b4 \ube44\ud2b8 \ud06c\uae30\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n<p>\ud310\uc744 \uad00\ud1b5\ud558\ub294 \ud074\ub9ac\uc5b4\ub7f0\uc2a4 \uad6c\uba4d(ISO 273\uc5d0 \ub530\ub978 \uc911\uac04 \ub9de\ucda4): <strong>9.0 mm \ub4dc\ub9b4 \ube44\ud2b8<\/strong>. M8 \ub098\uc0ac\ub97c \uc218\uc6a9\ud558\ub294 \ube14\ub77c\uc778\ub4dc \uad6c\uba4d\uc758 \ub098\uc0ac\uc0b0 \uac00\uacf5\uc6a9: <strong>6.8 mm \ud0ed \ub4dc\ub9b4 \ube44\ud2b8<\/strong> \ud45c\uc900 \uac70\uce5c M8\u00d71.25 \ub098\uc0ac\uc0b0\uc6a9. \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uac15\uc5d0 \ub4dc\ub9b4\ub9c1\ud560 \ub54c\ub294 \ucf54\ubc1c\ud2b8 \ub610\ub294 TiN \ucf54\ud305 \ub4dc\ub9b4 \ube44\ud2b8\ub97c \uc0ac\uc6a9\ud558\uace0 \uc808\uc0ad\uc720\ub97c \ubc14\ub974\uc138\uc694.<\/p>\n<h3>A2-70 \ubcfc\ud2b8\ub294 Grade 8.8\uc5d0 \ube44\ud574 \uc5bc\ub9c8\ub098 \uac15\ud55c\uac00\uc694?<\/h3>\n<p>A2 70 \ubcfc\ud2b8\uc758 \uc778\uc7a5 \uac15\ub3c4\ub294 700 N\/mm\u00b2\uc774\uace0 Grade 8.8 \ud0c4\uc18c\uac15\uc740 800 N\/mm\u00b2\ub85c, \uc778\uc7a5 \uac15\ub3c4 \uba74\uc5d0\uc11c \uc57d 12.5% \uc57d\ud569\ub2c8\ub2e4. \uc99d\uba85 \uc751\ub825(\ud56d\ubcf5 \ub4f1\uac00)\uc740 A2-70\uc774 450 N\/mm\u00b2\uc774\uace0 8.8\uc740 640 N\/mm\u00b2\ub85c, \ub354 \ud070 30% \ucc28\uc774\uac00 \uc788\uc2b5\ub2c8\ub2e4. \ubd80\uc2dd \uc800\ud56d\uc774 \ud544\uc694 \uc5c6\ub294 \ud558\uc911 \uc9c0\uc9c0 \uc870\uc778\ud2b8\uc758 \uacbd\uc6b0, 8.8 \ud0c4\uc18c\uac15\uc774 \ub354 \uac15\ud558\uace0 \uacbd\uc81c\uc801 \uc120\ud0dd\uc785\ub2c8\ub2e4. \ubd80\uc2dd \ud658\uacbd\uc5d0\uc11c\ub294 A2-70\uc758 \uc720\uc9c0\ubcf4\uc218 \uc5c6\ub294 \uc11c\ube44\uc2a4 \uc218\uba85\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc591\uc744 \uc815\ub2f9\ud654\ud569\ub2c8\ub2e4.<\/p>\n<h3>A2-70 \ubcfc\ud2b8\ub294 \uc5b4\ub514\uc5d0\uc11c \uad6c\uc785\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n<p>A2-70 \ubcfc\ud2b8\ub294 \uc0b0\uc5c5\uc6a9 \ud328\uc2a4\ub108 \uc720\ud1b5\uc5c5\uccb4, \uc628\ub77c\uc778 \uacf5\uae09\uc5c5\uccb4, \uadf8\ub9ac\uace0 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \ud328\uc2a4\ub108 \uc804\ubb38 \uc81c\uc870\uc5c5\uccb4\uc5d0\uc11c \uad6c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uad6c\ub9e4 \uc2dc ISO 3506 \uc7ac\ub8cc \uc99d\uba85\uc11c\ub97c \uc81c\uacf5\ud558\ub294 \uacf5\uae09\uc5c5\uccb4\ub97c \ucc3e\uace0, \ud5e4\ub4dc \ub9c8\ud0b9\uc774 \uc8fc\ubb38\ud55c \ub4f1\uae09\uacfc \uc77c\uce58\ud558\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694. \ub300\ub7c9 \uc8fc\ubb38 \uc2dc\uc5d0\ub294 \uc7ac\ub8cc\uc640 \uae30\uacc4\uc801 \uc801\ud569\uc131\uc744 \uac80\uc99d\ud558\uae30 \uc704\ud574 \ubc00 \uc99d\uba85\uc11c(EN 10204 3.1 \ub610\ub294 3.2 \uc99d\uba85\uc11c)\ub97c \uc694\uccad\ud558\uc138\uc694 \u2014 \uc774\ub294 \ud488\uc9c8\uc774 \uc911\uc694\ud55c \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \ud45c\uc900 \uad00\ud589\uc785\ub2c8\ub2e4.<\/p>\n<figure><img decoding=\"async\" style=\"width: 100%; height: auto;\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/04\/04-closing-2.jpg\" alt=\"\ub113\uc740 \uc0b0\uc5c5 \ud658\uacbd\uc5d0\uc11c \uc815\ub9ac\ub41c \ud50c\ub79c\uc9c0 \ubcfc\ud2b8\uc640 \uc0b0\uc5c5\uc6a9 \ub098\uc0ac\uc758 \uc800\uc7a5\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ub529\ub871 \uc81c\uc870 \uc2dc\uc124\uc758 \ucc3d\uace0.\" \/><\/figure>\n<hr \/>\n<h2>\uacb0\ub860<\/h2>\n<p>A2 70 \ubcfc\ud2b8\ub294 \ub300\ubd80\ubd84\uc758 \ubd80\uc2dd \ubbfc\uac10\ud55c \uccb4\uacb0 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc801\ud569\ud55c \uae30\ubcf8 \uc120\ud0dd\uc785\ub2c8\ub2e4: \uc57c\uc678 \uac74\uc124, \uc2dd\ud488 \uac00\uacf5 \uc7a5\ube44, \uac74\ucd95 \ud558\ub4dc\uc6e8\uc5b4, \uadf8\ub9ac\uace0 \uc55e\uc73c\ub85c 20\ub144 \ub3d9\uc548 \uc720\uc9c0\ubcf4\uc218 \uc5c6\uc774 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ud328\uc2a4\ub108\uac00 \ud544\uc694\ud55c \uacf3\uc785\ub2c8\ub2e4. 304\uc5d0 \uc0c1\uc751\ud558\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc7ac\ub8cc\uc640 \ub0c9\uac04 \uac00\uacf5\ub41c 700 N\/mm\u00b2 \uac15\ub3c4\uc758 \uc870\ud569\uc774 \uc2e4\uc81c \uc694\uad6c \uc0ac\ud56d\uc758 \ub300\ubd80\ubd84\uc744 \ucda9\uc871\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc911\uc694 \uacb0\uc815 \ud3ec\uc778\ud2b8: \uc5fc\uc18c \uc774\uc628 \ubd80\uc2dd\uc774 \uc2e4\uc81c \ud658\uacbd\uc801 \uc694\uc778\uc778 \uacbd\uc6b0 A4-80\uc73c\ub85c \uc5c5\uadf8\ub808\uc774\ub4dc\ud558\uace0, A2-70\uc774 \uc9c0\uc815\ub41c \uacf3\uc5d0\uc11c A2-50\uc744 \ub300\uccb4\ud488\uc73c\ub85c \uc808\ub300 \ubc1b\uc544\ub4e4\uc774\uc9c0 \ub9c8\uc138\uc694 \u2014 \uac89\ubcf4\uae30\uc5d0\ub294 \ub3d9\uc77c\ud558\uc9c0\ub9cc \uae30\uacc4\uc801 \ud2b9\uc131\uc740 \uc758\ubbf8 \uc788\uac8c \ub2e4\ub985\ub2c8\ub2e4. \uc124\uce58 \uc2dc, \uc2a4\ub808\ub4dc \uc724\ud65c\uc81c\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac00\ub9c1(galling)\uc744 \ubc29\uc9c0\ud558\ub294 \uac83\uc774 \uac00\uc7a5 \uc911\uc694\ud55c \uc2e4\ucc9c\ubc95\uc774\uba70, \ub300\ubd80\ubd84\uc758 \uc124\uce58 \uac00\uc774\ub4dc\uac00 \uc774\ub97c \uc0dd\ub7b5\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. <a href=\"https:\/\/productionscrews.com\/ko\/rivet-nut\/\" target=\"_blank\" rel=\"noopener\" data-wpil-monitor-id=\"823\">\uc124\uce58 \uac00\uc774\ub4dc<\/a> \uc0dd\ub7b5.<\/p>\n<p>ProductionScrews.com\uc5d0\uc11c\ub294 M4\ubd80\ud130 M36\uae4c\uc9c0 \ubaa8\ub4e0 \uc8fc\uc694 \ud5e4\ub4dc \uc2a4\ud0c0\uc77c\uc758 A2 70 \ubcfc\ud2b8 \uc870\ub9bd\ud488\uc744 \uc7ac\uace0\ub85c \ubcf4\uc720\ud558\uace0 \uc788\uc73c\uba70, \uc694\uccad \uc2dc ISO 3506 \uc778\uc99d\uc11c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc6b0\ub9ac\uc758 A2-70 \uc81c\ud488\uad70\uc744 \ub458\ub7ec\ubcf4\uac70\ub098, \ubcfc\ud2b8 \ub4f1\uae09\uacfc \uc6a9\ub3c4\uc5d0 \ub9de\ub294 \uc81c\ud488\uc744 \ucc3e\ub294 \ub370 \ub3c4\uc6c0\uc774 \ud544\uc694\ud558\uba74 \uae30\uc220\ud300\uc5d0 \ubb38\uc758\ud558\uc138\uc694.<\/p>\n<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does A2-70 mean on a bolt?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A2-70 means the bolt is made from austenitic stainless steel grade A2 (equivalent to 304 stainless) and has achieved property class 70, meaning a minimum tensile strength of 700 N\\\/mm\\u00b2 and a minimum proof stress of 450 N\\\/mm\\u00b2, per ISO 3506.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the ASTM equivalent of A2-70?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The closest ASTM equivalent for an A2-70 bolt is ASTM F593 Alloy Group 1 (304\\\/305 stainless), Condition CW (cold worked), which provides comparable strength to ISO 3506 class 70.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use A2-70 bolts with a stainless steel nut?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Use A2 nuts with A2-70 bolts. Always apply anti-seize or thread lubricant when assembling stainless-to-stainless threads to prevent galling.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is an A2-70 bolt magnetic?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No, A2-70 bolts are non-magnetic in the annealed state. Minor magnetism from cold working during manufacture is normal and not a material defect.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What drill bit size for an A2-70 M8 bolt?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"For a clearance hole (medium fit per ISO 273): 9.0 mm. For threading a blind hole (M8\\u00d71.25 coarse thread): 6.8 mm tap drill bit. Use cobalt or TiN-coated bits with cutting fluid when drilling stainless.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How strong is an A2-70 bolt compared to Grade 8.8?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"An A2-70 bolt has 700 N\\\/mm\\u00b2 tensile strength vs. 800 N\\\/mm\\u00b2 for 8.8 carbon steel \\u2014 about 12.5% weaker in tensile terms. For non-corrosive environments, 8.8 steel is stronger and more economical; for corrosive environments, A2-70's maintenance-free service life justifies the specification.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where can I buy A2-70 bolts?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A2-70 bolts are available from industrial fastener distributors and specialist stainless fastener suppliers. Always request ISO 3506 material certificates and confirm head markings match the ordered grade. For bulk orders, request an EN 10204 3.1 or 3.2 mill certificate.\"\n            }\n        }\n    ]\n}<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>A2-70 \ubcfc\ud2b8\uc5d0 \ub300\ud574 \uc54c\uc544\uc57c \ud560 \ubaa8\ub4e0 \uac83: \uba85\uce6d \ubd84\uc11d, \uc7ac\ub8cc \ud2b9\uc131, \uc885\ub958, \uc6a9\ub3c4, \ud1a0\ud06c \uac12, \ub4dc\ub9b4 \ud06c\uae30, \uadf8\ub9ac\uace0 A2-70\uacfc A4-80 \uc911 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95.<\/p>","protected":false},"author":1,"featured_media":3459,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-screws-flange-tutorial"],"_links":{"self":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/3463","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/comments?post=3463"}],"version-history":[{"count":1,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/3463\/revisions"}],"predecessor-version":[{"id":3464,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/posts\/3463\/revisions\/3464"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/media\/3459"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/media?parent=3463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/categories?post=3463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/ko\/wp-json\/wp\/v2\/tags?post=3463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}