{"id":3898,"date":"2026-05-11T09:40:32","date_gmt":"2026-05-11T09:40:32","guid":{"rendered":"https:\/\/productionscrews.com\/difference-between-bolt-and-screw\/"},"modified":"2026-05-11T09:40:45","modified_gmt":"2026-05-11T09:40:45","slug":"difference-between-bolt-and-screw","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/difference-between-bolt-and-screw\/","title":{"rendered":"Bu l\u00f4ng v\u00e0 V\u00edt: H\u01b0\u1edbng D\u1eabn Ph\u00e2n Bi\u1ec7t \u0110\u1ea7y \u0110\u1ee7 Cho K\u1ef9 S\u01b0 v\u00e0 Ng\u01b0\u1eddi L\u00e0m T\u1ef1 Ch\u1ebf (2026)"},"content":{"rendered":"<p>Bu l\u00f4ng v\u00e0 V\u00edt: H\u01b0\u1edbng D\u1eabn Ph\u00e2n Bi\u1ec7t \u0110\u1ea7y \u0110\u1ee7 Cho K\u1ef9 S\u01b0 v\u00e0 Ng\u01b0\u1eddi L\u00e0m T\u1ef1 Ch\u1ebf (2026)<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/difference-between-bolt-and-screw-hero.png\" alt=\"s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt \u2014 h\u00ecnh minh h\u1ecda ch\u00ednh cho th\u1ea5y bu l\u00f4ng v\u1edbi \u0111ai \u1ed1c v\u00e0 v\u00edt \u0111\u1eb7t c\u1ea1nh nhau tr\u00ean b\u00e0n l\u00e0m vi\u1ec7c\" class=\"wp-image\"><\/p>\n<p class=\"direct-answer\"><strong>Bu l\u00f4ng k\u1ebft h\u1ee3p v\u1edbi \u0111ai \u1ed1c v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t b\u1eb1ng c\u00e1ch xoay \u0111ai \u1ed1c; v\u00edt \u0111\u01b0\u1ee3c v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t t\u1ea1i \u0111\u1ea7u c\u1ee7a n\u00f3 \u2014 s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i l\u00e0 c\u00e1ch m\u1ed7i lo\u1ea1i truy\u1ec1n t\u1ea3i l\u1ef1c.<\/strong><\/p>\n<p>B\u01b0\u1edbc v\u00e0o b\u1ea5t k\u1ef3 c\u1eeda h\u00e0ng v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng n\u00e0o, b\u1ea1n s\u1ebd th\u1ea5y bu l\u00f4ng v\u00e0 v\u00edt n\u1eb1m tr\u00ean c\u00e1c k\u1ec7 ch\u1ec9 c\u00e1ch nhau v\u00e0i b\u01b0\u1edbc ch\u00e2n. Bao b\u00ec tr\u00f4ng gi\u1ed1ng nhau. Ren c\u0169ng gi\u1ed1ng nhau. Ngay c\u1ea3 nh\u1eefng ng\u01b0\u1eddi x\u00e2y d\u1ef1ng c\u00f3 kinh nghi\u1ec7m \u0111\u00f4i khi c\u0169ng l\u1ea5y nh\u1ea7m lo\u1ea1i ch\u1ed1t \u2014 v\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u ho\u1eb7c quan tr\u1ecdng v\u1ec1 an to\u00e0n, sai l\u1ea7m \u0111\u00f3 g\u00e2y t\u1ed1n th\u1eddi gian, ti\u1ec1n b\u1ea1c v\u00e0 \u0111\u00f4i khi \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n k\u1ebft c\u1ea5u. Hi\u1ec3u \u0111\u01b0\u1ee3c <strong>s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt<\/strong> kh\u00f4ng ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft: n\u00f3 quy\u1ebft \u0111\u1ecbnh li\u1ec7u m\u1ed1i n\u1ed1i c\u1ee7a b\u1ea1n c\u00f3 gi\u1eef \u0111\u01b0\u1ee3c khi rung \u0111\u1ed9ng, li\u1ec7u b\u1ea1n c\u00f3 th\u1ec3 th\u00e1o l\u1eafp s\u1ea1ch s\u1ebd hay kh\u00f4ng, v\u00e0 li\u1ec7u c\u1ee5m c\u1ee7a b\u1ea1n c\u00f3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh hay kh\u00f4ng.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m m\u1ecdi th\u1ee9 b\u1ea1n c\u1ea7n \u2014 \u0111\u1ecbnh ngh\u0129a k\u1ef9 thu\u1eadt, c\u00e1c lo\u1ea1i, c\u1ea5p v\u1eadt li\u1ec7u, so s\u00e1nh \u0111\u1ed9 b\u1ec1n, \u1ee9ng d\u1ee5ng trong ng\u00e0nh v\u00e0 khung quy\u1ebft \u0111\u1ecbnh \u0111\u01a1n gi\u1ea3n \u2014 \u0111\u1ec3 b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i ch\u1ed1t ngay t\u1eeb l\u1ea7n \u0111\u1ea7u ti\u00ean.<\/p>\n<h2>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt l\u00e0 g\u00ec?<\/h2>\n<p>Bu l\u00f4ng l\u00e0 lo\u1ea1i ch\u1ed1t d\u1ef1a v\u00e0o \u0111ai \u1ed1c (ho\u1eb7c l\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ren tr\u01b0\u1edbc) \u0111\u1ec3 k\u1eb9p hai ho\u1eb7c nhi\u1ec1u v\u1eadt li\u1ec7u l\u1ea1i v\u1edbi nhau; l\u1ef1c si\u1ebft \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng t\u1ea1i \u0111\u1ea7u \u0111ai \u1ed1c. V\u00edt l\u00e0 lo\u1ea1i ch\u1ed1t \u0111\u01b0\u1ee3c v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n \u2014 c\u00f3 th\u1ec3 l\u00e0 g\u1ed7, kim lo\u1ea1i, nh\u1ef1a ho\u1eb7c b\u00ea t\u00f4ng \u2014 v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t t\u1ea1i \u0111\u1ea7u c\u1ee7a n\u00f3.<\/p>\n<p>S\u1ef1 ph\u00e2n bi\u1ec7t ch\u1ec9 trong m\u1ed9t c\u00e2u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ecdi kh\u00eda c\u1ea1nh v\u1ec1 c\u00e1ch c\u00e1c lo\u1ea1i ch\u1ed1t n\u00e0y ho\u1ea1t \u0111\u1ed9ng: ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t, ph\u00e2n ph\u1ed1i l\u1ef1c k\u1eb9p, kh\u1ea3 n\u0103ng th\u00e1o r\u1eddi v\u00e0 truy\u1ec1n t\u1ea3i l\u1ef1c.<\/p>\n<h3>\u0110\u1ecbnh ngh\u0129a k\u1ef9 thu\u1eadt<\/h3>\n<p>Theo <a href=\"https:\/\/www.asme.org\/\" target=\"_blank\" rel=\"noopener\">Ti\u00eau chu\u1ea9n ch\u1ed1t ASME B18<\/a>, \u0111\u1ecbnh ngh\u0129a k\u1ef9 thu\u1eadt d\u1ef1a v\u00e0o <strong>c\u00e1ch ch\u1ed1t \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t<\/strong>:<\/p>\n<ul>\n<li><strong>\u1ed0c v\u00edt<\/strong>: m\u1ed9t lo\u1ea1i ch\u1ed1t c\u00f3 \u0111\u1ea7u \u1edf m\u1ed9t \u0111\u1ea7u, th\u00e2n c\u00f3 ren v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1eafp v\u1edbi \u0111ai \u1ed1c. Vi\u1ec7c si\u1ebft ch\u1eb7t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch xoay \u0111ai \u1ed1c, kh\u00f4ng ph\u1ea3i \u0111\u1ea7u bu l\u00f4ng.<\/li>\n<li><strong>V\u00edt<\/strong>: m\u1ed9t lo\u1ea1i ch\u1ed1t \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t b\u1eb1ng c\u00e1ch xoay <em>ch\u00ednh<\/em> \u0111\u1ea7u c\u1ee7a n\u00f3. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o l\u1ed7 \u0111\u00e3 t\u1ea1o ren, l\u1ed7 \u0111\u00e3 t\u1ea1o s\u1eb5n ho\u1eb7c t\u1ef1 t\u1ea1o ren trong v\u1eadt li\u1ec7u n\u1ec1n.<\/li>\n<\/ul>\n<p>Tr\u00ean th\u1ef1c t\u1ebf, ranh gi\u1edbi n\u00e0y kh\u00e1 m\u1edd. M\u1ed9t bu l\u00f4ng l\u1ee5c gi\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1ed7 \u0111\u00e3 t\u1ea1o ren \u2014 si\u1ebft ch\u1eb7t b\u1eb1ng c\u00e1ch xoay \u0111\u1ea7u c\u1ee7a n\u00f3 \u2014 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt s\u1ebd ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00edt theo \u0111\u1ecbnh ngh\u0129a n\u00e0y. C\u00e1c k\u1ef9 s\u01b0 \u0111\u00f4i khi \u0111\u00f9a r\u1eb1ng \u201cbu l\u00f4ng tr\u1edf th\u00e0nh v\u00edt ngay khi b\u1ea1n th\u00e1o \u0111ai \u1ed1c.\u201d Quan \u0111i\u1ec3m th\u1ef1c t\u1ebf n\u00e0y l\u00e0 l\u00fd do c\u00e1c thu\u1eadt ng\u1eef b\u1ecb nh\u1ea7m l\u1eabn, nh\u01b0ng \u0111\u1ed1i v\u1edbi vi\u1ec7c x\u00e1c \u0111\u1ecbnh, mua h\u00e0ng v\u00e0 t\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng th\u00ec s\u1ef1 ph\u00e2n bi\u1ec7t ch\u00ednh th\u1ee9c r\u1ea5t quan tr\u1ecdng.<\/p>\n<h3>C\u00e1ch ti\u00eau chu\u1ea9n x\u00e1c \u0111\u1ecbnh bu l\u00f4ng v\u00e0 v\u00edt<\/h3>\n<p>C\u00e1c <a href=\"https:\/\/www.iso.org\/\" target=\"_blank\" rel=\"noopener\">T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n h\u00f3a Qu\u1ed1c t\u1ebf (ISO)<\/a> v\u00e0 ASME \u0111\u1ec1u quy \u0111\u1ecbnh c\u00e1c lo\u1ea1i ch\u1ed1t v\u1edbi ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc c\u1ee5 th\u1ec3. Bu l\u00f4ng theo ti\u00eau chu\u1ea9n ISO c\u00f3 k\u00fd hi\u1ec7u M-series (M6, M8, M10, v.v.) v\u00e0 ti\u00eau chu\u1ea9n ren v\u00edt theo ISO 68-1. Hi\u1ec3u ti\u00eau chu\u1ea9n n\u00e0o \u00e1p d\u1ee5ng cho ch\u1ed1t c\u1ee7a b\u1ea1n \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng l\u1eafp r\u00e1p \u0111\u1ed3ng b\u1ed9 \u2014 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t n\u01a1i bu l\u00f4ng v\u00e0 v\u00edt t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau ph\u1ea3i l\u1eafp r\u00e1p nh\u1ea5t qu\u00e1n.<\/p>\n<p><strong>B\u1ea2NG 1: Bu l\u00f4ng vs V\u00edt \u2014 So s\u00e1nh song song<\/strong><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>\u1ed0c v\u00edt<\/th>\n<th>V\u00edt<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ph\u01b0\u01a1ng ph\u00e1p si\u1ebft ch\u1eb7t<\/td>\n<td>\u1ed0c ho\u1eb7c th\u00e0nh ph\u1ea7n gh\u00e9p \u0111\u00f4i<\/td>\n<td>Xoay \u0111\u1ea7u c\u1ee7a ch\u00ednh n\u00f3<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ee7 ren<\/td>\n<td>M\u1ed9t ph\u1ea7n ho\u1eb7c to\u00e0n b\u1ed9<\/td>\n<td>G\u1ea7n nh\u01b0 lu\u00f4n lu\u00f4n \u0111\u1ea7y \u0111\u1ee7<\/td>\n<\/tr>\n<tr>\n<td>Y\u00eau c\u1ea7u n\u1ec1n<\/td>\n<td>L\u1ed7 qua ho\u1eb7c l\u1ed7 \u0111\u00e3 khoan s\u1eb5n<\/td>\n<td>Ch\u1ea5t li\u1ec7u n\u1ec1n (g\u1ed7, kim lo\u1ea1i, nh\u1ef1a)<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e1o b\u1ecf\/t\u00e1i s\u1eed d\u1ee5ng<\/td>\n<td>Cao \u2014 \u1ed1c c\u00f3 th\u1ec3 thay th\u1ebf<\/td>\n<td>V\u1eeba ph\u1ea3i \u2014 ren n\u1ec1n c\u00f3 th\u1ec3 b\u1ecb tr\u01b0\u1ee3t<\/td>\n<\/tr>\n<tr>\n<td>Chuy\u1ec3n t\u1ea3i l\u1ef1c<\/td>\n<td>\u1ee8ng su\u1ea5t qua k\u1eb9p \u1ed1c<\/td>\n<td>\u1ee8ng su\u1ea5t + m\u1ed9t s\u1ed1 l\u1ef1c c\u1eaft qua s\u1ef1 ti\u1ebfp x\u00fac n\u1ec1n<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c ki\u1ec3u \u0111\u1ea7u \u0111i\u1ec3n h\u00ecnh<\/td>\n<td>L\u1ee5c gi\u00e1c, m\u1eb7t b\u00edch, xe \u0111\u1ea9y<\/td>\n<td>Ch\u1ea3o, ph\u1eb3ng, tr\u00f2n, l\u1ee5c gi\u00e1c, Phillips<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n<\/td>\n<td>ASME B18.2.1, ISO 4014\/4017<\/td>\n<td>ASME B18.6, ISO 1207<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh<\/td>\n<td>K\u1ebft c\u1ea5u, l\u1eafp r\u00e1p c\u01a1 kh\u00ed<\/td>\n<td>G\u1ed7, t\u00f4n, nh\u1ef1a, gia c\u00f4ng nh\u1eb9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2>C\u00e1c lo\u1ea1i bu l\u00f4ng \u2014 T\u1ed5ng quan \u0111\u1ea7y \u0111\u1ee7<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt tr\u1edf n\u00ean r\u00f5 r\u00e0ng h\u01a1n khi b\u1ea1n th\u1ea5y c\u00f3 bao nhi\u00eau bi\u1ebfn th\u1ec3 bu l\u00f4ng t\u1ed3n t\u1ea1i, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n t\u1ea3i ho\u1eb7c m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3.<\/p>\n<h3>Bu l\u00f4ng l\u1ee5c gi\u00e1c v\u00e0 bu l\u00f4ng \u0111\u1ea7u tr\u00f2n c\u1ed5 vu\u00f4ng<\/h3>\n<p><strong>Bu l\u00f4ng h\u00ecnh l\u1ee5c gi\u00e1c<\/strong> (c\u00f2n g\u1ecdi l\u00e0 v\u00edt n\u1eafp l\u1ee5c gi\u00e1c) l\u00e0 lo\u1ea1i bu l\u00f4ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 x\u00e2y d\u1ef1ng. Ch\u00fang c\u00f3 \u0111\u1ea7u s\u00e1u c\u1ea1nh \u0111\u1ec3 v\u1eb7n b\u1eb1ng c\u1edd l\u00ea, th\u00e2n bu l\u00f4ng ch\u1ec9 ren m\u1ed9t ph\u1ea7n v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi \u0111ai \u1ed1c l\u1ee5c gi\u00e1c ho\u1eb7c trong c\u00e1c l\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c taro. Ph\u1ea7n th\u00e2n kh\u00f4ng ren (ngay d\u01b0\u1edbi \u0111\u1ea7u bu l\u00f4ng) ch\u1ecbu t\u1ea3i c\u1eaft t\u1ed1t h\u01a1n so v\u1edbi bu l\u00f4ng ren to\u00e0n b\u1ed9 \u2014 \u0111\u00e2y l\u00e0 l\u1ee3i th\u1ebf quan tr\u1ecdng trong c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u th\u00e9p.<\/p>\n<p><strong>Bu l\u00f4ng xe<\/strong> c\u00f3 c\u00e1ch ti\u1ebfp c\u1eadn kh\u00e1c v\u1ec1 an to\u00e0n l\u1eafp \u0111\u1eb7t. \u0110\u1ea7u tr\u00f2n, nh\u1eb5n n\u1eb1m ph\u1eb3ng tr\u00ean b\u1ec1 m\u1eb7t ngo\u00e0i, trong khi ph\u1ea7n c\u1ed5 vu\u00f4ng ngay d\u01b0\u1edbi \u0111\u1ea7u bu l\u00f4ng b\u00e1m ch\u1eb7t v\u00e0o v\u1eadt li\u1ec7u xung quanh v\u00e0 ng\u0103n kh\u00f4ng cho bu l\u00f4ng xoay khi si\u1ebft \u0111ai \u1ed1c. \u0110i\u1ec1u n\u00e0y l\u00e0m cho bu l\u00f4ng \u0111\u1ea7u tr\u00f2n c\u1ed5 vu\u00f4ng l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ed1i n\u1ed1i g\u1ed7 v\u1edbi g\u1ed7 v\u00e0 g\u1ed7 v\u1edbi kim lo\u1ea1i, n\u01a1i b\u1ea1n kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn ph\u00eda \u0111\u1ea7u bu l\u00f4ng sau khi l\u1eafp r\u00e1p \u2014 x\u00e2y d\u1ef1ng s\u00e0n, khung xe mo\u00f3c v\u00e0 thi\u1ebft b\u1ecb s\u00e2n ch\u01a1i l\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh.<\/p>\n<h3>Bu l\u00f4ng neo v\u00e0 bu l\u00f4ng m\u1eb7t b\u00edch<\/h3>\n<p><strong>Bu l\u00f4ng neo<\/strong> \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o b\u00ea t\u00f4ng ho\u1eb7c g\u1ea1ch, cung c\u1ea5p ph\u1ea7n ren nh\u00f4 ra \u0111\u1ec3 li\u00ean k\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft c\u1ea5u (c\u1ed9t, b\u1ea3n \u0111\u1ebf, b\u1ec7 m\u00e1y m\u00f3c). C\u00f3 bu l\u00f4ng neo h\u00ecnh ch\u1eef L (\u0111\u00fac v\u00e0o b\u00ea t\u00f4ng t\u01b0\u01a1i), bu l\u00f4ng neo n\u1edf (l\u1eafp v\u00e0o b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f4ng c\u1ee9ng b\u1eb1ng c\u00e1ch khoan l\u1ed7), v\u00e0 bu l\u00f4ng neo h\u00f3a ch\u1ea5t\/keo epoxy cho kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao nh\u1ea5t. Trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t, bu l\u00f4ng neo m\u00e1y m\u00f3c ph\u1ea3i \u0111\u01b0\u1ee3c si\u1ebft \u0111\u00fang l\u1ef1c quy \u0111\u1ecbnh \u0111\u1ec3 tr\u00e1nh chuy\u1ec3n \u0111\u1ed9ng nh\u1ecf g\u00e2y m\u1ecfi do rung \u0111\u1ed9ng.<\/p>\n<p><strong>Bu l\u00f4ng m\u1eb7t b\u00edch<\/strong> c\u00f3 th\u00eam m\u1eb7t b\u00edch c\u00f3 r\u0103ng c\u01b0a t\u00edch h\u1ee3p (m\u1eb7t b\u00edch) \u1edf \u0111\u1ea7u bu l\u00f4ng. C\u00e1c r\u0103ng c\u01b0a b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac, t\u1ea1o ra t\u00e1c d\u1ee5ng kh\u00f3a v\u00e0 t\u0103ng di\u1ec7n t\u00edch ch\u1ecbu l\u1ef1c, gi\u00fap ph\u00e2n b\u1ed5 l\u1ef1c si\u1ebft \u0111\u1ec1u h\u01a1n. B\u1ea1n s\u1ebd th\u1ea5y bu l\u00f4ng m\u1eb7t b\u00edch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 \u00f4 t\u00f4, m\u1eb7t b\u00edch \u1ed1ng n\u01b0\u1edbc v\u00e0 b\u1ea5t c\u1ee9 n\u01a1i n\u00e0o rung \u0111\u1ed9ng c\u00f3 th\u1ec3 l\u00e0m l\u1ecfng c\u00e1c c\u1ee5m bu l\u00f4ng-\u0111ai \u1ed1c th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h3>Bu l\u00f4ng m\u1eaft, bu l\u00f4ng ch\u1eef U v\u00e0 bu l\u00f4ng chuy\u00ean d\u1ee5ng<\/h3>\n<p><strong>\u1ed1c m\u1eaft<\/strong> c\u00f3 \u0111\u1ea7u d\u1ea1ng v\u00f2ng \u0111\u1ec3 m\u00f3c d\u00e2y c\u00e1p, d\u00e2y treo ho\u1eb7c m\u00f3c n\u00e2ng. T\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c cho ph\u00e9p \u0111\u01b0\u1ee3c d\u1eadp tr\u00ean th\u00e2n bu l\u00f4ng ho\u1eb7c ghi trong t\u00e0i li\u1ec7u \u2014 lu\u00f4n ki\u1ec3m tra th\u00f4ng s\u1ed1 n\u00e0y tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch n\u00e2ng h\u1ea1. <strong>Bu l\u00f4ng ch\u1eef U<\/strong> \u00f4m quanh \u1ed1ng, \u1ed1ng d\u1eabn ho\u1eb7c thanh tr\u00f2n \u0111\u1ec3 k\u1eb9p v\u00e0o b\u1ec1 m\u1eb7t ph\u1eb3ng; ch\u00fang \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng v\u00e0 l\u00e0 lo\u1ea1i bu l\u00f4ng ti\u00eau chu\u1ea9n cho gi\u00e1 \u0111\u1ee1 \u1ed1ng trong h\u1ec7 th\u1ed1ng HVAC v\u00e0 c\u1ea5p tho\u00e1t n\u01b0\u1edbc.<\/p>\n<p><strong>B\u1ea2NG 2: C\u00e1c lo\u1ea1i bu l\u00f4ng v\u00e0 \u1ee9ng d\u1ee5ng ph\u00f9 h\u1ee3p nh\u1ea5t<\/strong><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i \u1ed1c v\u00edt<\/th>\n<th>Ren<\/th>\n<th>Ki\u1ec3u \u0111\u1ea7u<\/th>\n<th>\u1ee8ng d\u1ee5ng ch\u00ednh<\/th>\n<th>Th\u00f4ng s\u1ed1 ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Bu l\u00f4ng h\u00ecnh l\u1ee5c gi\u00e1c<\/td>\n<td>M\u1ed9t ph\u1ea7n<\/td>\n<td>L\u1ee5c gi\u00e1c<\/td>\n<td>C\u1ea5u tr\u00fac, m\u00e1y m\u00f3c<\/td>\n<td>ASME B18.2.1 C\u1ea5p 5\/8<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng xe<\/td>\n<td>To\u00e0n b\u1ed9<\/td>\n<td>\u0110\u1ea7u tr\u00f2n + c\u1ed5 vu\u00f4ng<\/td>\n<td>Li\u00ean k\u1ebft g\u1ed7, s\u00e0n g\u1ed7<\/td>\n<td>ASME B18.5<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u1eb7t b\u00edch<\/td>\n<td>M\u1ed9t ph\u1ea7n<\/td>\n<td>L\u1ee5c gi\u00e1c + m\u1eb7t b\u00edch c\u00f3 r\u00e3nh<\/td>\n<td>\u00d4 t\u00f4, m\u00f4i tr\u01b0\u1eddng rung \u0111\u1ed9ng<\/td>\n<td>ISO 1665<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u00f3c<\/td>\n<td>M\u1ed9t ph\u1ea7n<\/td>\n<td>G\u1eadp ch\u1eef L \/ m\u00f3c<\/td>\n<td>Ch\u00e8n b\u00ea t\u00f4ng<\/td>\n<td>ASTM F1554<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng m\u1eaft<\/td>\n<td>To\u00e0n b\u1ed9<\/td>\n<td>V\u00f2ng\/khuy\u00ean<\/td>\n<td>N\u00e2ng h\u1ea1, thi\u1ebft b\u1ecb c\u1ea9u<\/td>\n<td>WLL d\u1eadp tr\u00ean th\u00e2n<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng U<\/td>\n<td>To\u00e0n b\u1ed9<\/td>\n<td>H\u00ecnh ch\u1eef U<\/td>\n<td>K\u1eb9p \u1ed1ng, ti\u1ebft di\u1ec7n tr\u00f2n<\/td>\n<td>Ch\u1ec9 \u0111\u1ecbnh theo \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i \u1ed1ng<\/td>\n<\/tr>\n<tr>\n<td>Bu l\u00f4ng vai<\/td>\n<td>M\u1ed9t ph\u1ea7n<\/td>\n<td>L\u1ee5c gi\u00e1c<\/td>\n<td>\u0110i\u1ec3m xoay, linh ki\u1ec7n \u0111\u1ed3 g\u00e1<\/td>\n<td>Th\u00e2n \u0111\u01b0\u1ee3c m\u00e0i ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/difference-between-bolt-and-screw-types.png\" alt=\"s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt \u2014 s\u01a1 \u0111\u1ed3 minh h\u1ecda s\u00e1u lo\u1ea1i bu l\u00f4ng g\u1ed3m l\u1ee5c gi\u00e1c, bu l\u00f4ng xe, bu l\u00f4ng m\u1eb7t b\u00edch v\u00e0 bu l\u00f4ng neo v\u1edbi c\u00e1c ph\u1ea7n \u0111\u01b0\u1ee3c ghi ch\u00fa\" class=\"wp-image\"><\/p>\n<h2>C\u00e1c lo\u1ea1i v\u00edt \u2014 T\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n bi\u1ebft<\/h2>\n<p>V\u00edt c\u00f3 s\u1ed1 l\u01b0\u1ee3ng \u0111a d\u1ea1ng h\u01a1n bu l\u00f4ng v\u00ec ch\u00fang ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi r\u1ea5t nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u2014 t\u1eeb g\u1ed7 m\u1ec1m \u0111\u1ebfn th\u00e9p t\u00f4i c\u1ee9ng, t\u1eeb nh\u1ef1a ABS \u0111\u1ebfn t\u1ea5m th\u1ea1ch cao.<\/p>\n<h3>V\u00edt m\u00e1y so v\u1edbi v\u00edt g\u1ed7<\/h3>\n<p><strong>\u1ed0c v\u00edt m\u00e1y<\/strong> \u0111\u01b0\u1ee3c ren to\u00e0n b\u1ed9 v\u1edbi b\u01b0\u1edbc ren \u0111\u1ed3ng \u0111\u1ec1u, thi\u1ebft k\u1ebf \u0111\u1ec3 v\u1eb7n v\u00e0o l\u1ed7 kim lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c taro ho\u1eb7c l\u1eafp v\u1edbi \u0111ai \u1ed1c. Ch\u00fang kh\u00e1c v\u1edbi bu l\u00f4ng \u1edf ch\u1ed7 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf h\u01a1n (th\u01b0\u1eddng t\u1eeb #0 \u0111\u1ebfn #12 theo h\u1ec7 inch, ho\u1eb7c M1.6\u2013M8 h\u1ec7 m\u00e9t) v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft l\u1ef1c t\u1ea1i \u0111\u1ea7u v\u00edt. V\u00edt m\u00e1y xu\u1ea5t hi\u1ec7n \u1edf kh\u1eafp n\u01a1i trong thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, \u0111\u1ed3 gia d\u1ee5ng v\u00e0 d\u1ee5ng c\u1ee5 ch\u00ednh x\u00e1c. Khi b\u1ea1n si\u1ebft n\u1eafp b\u1ea3ng \u0111i\u1ec7n ho\u1eb7c l\u1eafp r\u00e1p l\u1ea1i laptop, \u0111\u00f3 ch\u00ednh l\u00e0 v\u00edt m\u00e1y.<\/p>\n<p><strong>\u1ed0c v\u00edt g\u1ed7<\/strong> c\u00f3 \u0111\u1ea7u nh\u1ecdn, t\u1ef1 khoan v\u00e0o g\u1ed7 m\u00e0 kh\u00f4ng c\u1ea7n khoan m\u1ed3i (tuy nhi\u00ean n\u00ean khoan l\u1ed7 d\u1eabn \u0111\u1ec3 tr\u00e1nh n\u1ee9t g\u1ed7). H\u00ecnh d\u1ea1ng ren th\u00f4 v\u00e0 s\u00e2u h\u01a1n v\u00edt m\u00e1y, thi\u1ebft k\u1ebf \u0111\u1ec3 b\u00e1m v\u00e0o th\u1edb g\u1ed7 thay v\u00ec \u0103n kh\u1edbp v\u1edbi ren \u0111\u00e3 gia c\u00f4ng. C\u00e1c lo\u1ea1i v\u00edt g\u1ed7 s\u1ea3n xu\u1ea5t hi\u1ec7n \u0111\u1ea1i \u2014 bao g\u1ed3m nhi\u1ec1u lo\u1ea1i d\u00f9ng cho l\u1eafp r\u00e1p s\u1ed1 l\u01b0\u1ee3ng l\u1edbn \u2014 s\u1eed d\u1ee5ng \u0111\u1ea7u c\u1eaft lo\u1ea1i 17 gi\u00fap v\u1eb7n nhanh h\u01a1n v\u00e0 gi\u1ea3m nguy c\u01a1 n\u1ee9t g\u1ed7.<\/p>\n<h3>V\u00edt t\u1ef1 khoan v\u00e0 v\u00edt t\u00f4n<\/h3>\n<p><strong>V\u00edt t\u1ef1 khoan<\/strong> t\u1ea1o ho\u1eb7c c\u1eaft ren ri\u00eang khi \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o. C\u00f3 hai lo\u1ea1i ph\u1ee5:<\/p>\n<ul>\n<li><strong>T\u1ea1o ren b\u1eb1ng c\u00e1ch bi\u1ebfn d\u1ea1ng (nh\u1ef1a\/kim lo\u1ea1i m\u1ec1m)<\/strong>: d\u1ecbch chuy\u1ec3n v\u1eadt li\u1ec7u thay v\u00ec c\u1eaft, t\u1ea1o ren m\u00e0 kh\u00f4ng sinh phoi. Ph\u1ed5 bi\u1ebfn trong nh\u1ef1a nhi\u1ec7t d\u1ebbo, nh\u00f4m v\u00e0 k\u1ebdm \u0111\u00fac.<\/li>\n<li><strong>C\u1eaft ren (v\u1eadt li\u1ec7u c\u1ee9ng h\u01a1n)<\/strong>: c\u1eaft ren b\u1eb1ng \u0111\u1ea7u c\u00f3 r\u00e3nh ho\u1eb7c khe, lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u nh\u01b0 m\u0169i taro. D\u00f9ng cho th\u00e9p, gang v\u00e0 c\u00e1c v\u1eadt li\u1ec7u n\u1ec1n c\u1ee9ng h\u01a1n.<\/li>\n<\/ul>\n<p><strong>\u1ed0c v\u00edt t\u1ea5m kim lo\u1ea1i<\/strong> l\u00e0 m\u1ed9t thi\u1ebft k\u1ebf t\u1ef1 t\u1ea1o ren \u0111\u1eb7c bi\u1ec7t v\u1edbi \u0111\u1ea7u nh\u1ecdn v\u00e0 th\u00e2n ren to\u00e0n b\u1ed9. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 li\u00ean k\u1ebft c\u00e1c t\u1ea5m kim lo\u1ea1i m\u1ecfng, \u1ed1ng d\u1eabn kh\u00ed v\u00e0 khung th\u00e9p m\u1ecfng. M\u1ed9t quy t\u1eafc \u00edt \u0111\u01b0\u1ee3c ch\u00fa \u00fd: v\u00edt t\u00f4n kh\u00f4ng n\u00ean d\u00f9ng cho c\u00e1c m\u1ed1i n\u1ed1i s\u1ebd \u0111\u01b0\u1ee3c th\u00e1o l\u1eafp nhi\u1ec1u l\u1ea7n \u2014 m\u1ed7i l\u1ea7n th\u00e1o s\u1ebd l\u00e0m suy gi\u1ea3m ren \u0111\u00e3 t\u1ea1o.<\/p>\n<h3>V\u00edt s\u1ea3n xu\u1ea5t cho ng\u00e0nh ch\u1ebf t\u1ea1o<\/h3>\n<p>Trong s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, <strong>v\u00edt s\u1ea3n xu\u1ea5t<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho l\u1eafp r\u00e1p t\u1ef1 \u0111\u1ed9ng \u2014 h\u00ecnh d\u1ea1ng \u0111\u1ea7u v\u00edt \u0111\u1ed3ng nh\u1ea5t cho m\u00e1y b\u1eaft v\u00edt, dung sai k\u00edch th\u01b0\u1edbc ch\u1eb7t ch\u1ebd \u0111\u1ec3 tr\u00e1nh k\u1eb9t trong b\u1ed9 c\u1ea5p ph\u00f4i, v\u00e0 l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t (m\u1ea1 k\u1ebdm, Dacromet, oxit \u0111en) \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n ch\u1ed1ng \u0103n m\u00f2n. Theo d\u1eef li\u1ec7u t\u1eeb <a href=\"https:\/\/www.fastenertech.com\/\" target=\"_blank\" rel=\"noopener\">C\u00f4ng ngh\u1ec7 Li\u00ean k\u1ebft Vi\u1ec7t Nam<\/a>, m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng l\u1eafp r\u00e1p t\u1ef1 \u0111\u1ed9ng gi\u1ea3m th\u1eddi gian chu tr\u00ecnh t\u1eeb 15\u201325% khi chuy\u1ec3n t\u1eeb v\u00edt th\u01b0\u01a1ng m\u1ea1i ti\u00eau chu\u1ea9n sang v\u00edt s\u1ea3n xu\u1ea5t v\u1edbi dung sai ch\u1eb7t ch\u1ebd v\u00e0 h\u00ecnh d\u1ea1ng \u0111\u1ea7u v\u00edt \u0111\u1ed3ng nh\u1ea5t.<\/p>\n<p>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng c\u1ee7a v\u00edt s\u1ea3n xu\u1ea5t c\u1ea7n ch\u00fa \u00fd:<\/p>\n<ul>\n<li><strong>Dung sai \u0111\u1ed9 s\u00e2u r\u00e3nh b\u1eaft v\u00edt<\/strong> \u00b1 0,05 mm \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e1y b\u1eaft v\u00edt t\u1ef1 \u0111\u1ed9ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh<\/li>\n<li><strong>\u0110\u1ed9 l\u1ec7ch chi\u1ec1u cao \u0111\u1ea7u v\u00edt<\/strong> d\u01b0\u1edbi 0,1 mm \u0111\u1ec3 tr\u00e1nh k\u1eb9t trong b\u1ed9 c\u1ea5p rung<\/li>\n<li><strong>\u0110\u1ed9 d\u00e0y l\u1edbp ph\u1ee7<\/strong>: ASTM B633 m\u1ea1 k\u1ebdm cho 72 gi\u1edd phun mu\u1ed1i, ho\u1eb7c ASTM B695 cho m\u1ea1 k\u1ebdm c\u01a1 kh\u00ed trong \u1ee9ng d\u1ee5ng s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn<\/li>\n<\/ul>\n<h2>Bu l\u00f4ng v\u00e0 v\u00edt: \u0110\u1ed9 b\u1ec1n, \u1ee8ng d\u1ee5ng v\u00e0 L\u1ef1a ch\u1ecdn<\/h2>\n<p>Hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t l\u00fd thuy\u1ebft gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt l\u00e0 h\u1eefu \u00edch; bi\u1ebft ch\u1ecdn lo\u1ea1i n\u00e0o cho \u0111i\u1ec1u ki\u1ec7n t\u1ea3i c\u1ee5 th\u1ec3 m\u1edbi l\u00e0 k\u1ef9 n\u0103ng th\u1ef1c t\u1ebf.<\/p>\n<h3>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng bu l\u00f4ng<\/h3>\n<p>S\u1eed d\u1ee5ng bu l\u00f4ng khi:<\/p>\n<ol>\n<li><strong>M\u1ed1i gh\u00e9p c\u1ea7n \u0111\u01b0\u1ee3c th\u00e1o l\u1eafp nhi\u1ec1u l\u1ea7n.<\/strong> Bu l\u00f4ng v\u00e0 \u0111ai \u1ed1c ph\u00e2n b\u1ed5 l\u1ef1c k\u1eb9p l\u00ean m\u1ed9t \u0111ai \u1ed1c c\u00f3 th\u1ec3 thay th\u1ebf \u2014 ren tr\u00ean bu l\u00f4ng hi\u1ebfm khi l\u00e0 \u0111i\u1ec3m b\u1ecb m\u00f2n. V\u00edt b\u1eaft tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n c\u00f3 th\u1ec3 b\u1ecb tu\u00f4n ren sau nhi\u1ec1u l\u1ea7n th\u00e1o l\u1eafp.<\/li>\n<\/ol>\n<ol>\n<li><strong>B\u1ea1n c\u1ea7n \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ef1c k\u1eb9p ch\u00ednh x\u00e1c (m\u1ed1i quan h\u1ec7 m\u00f4-men xo\u1eafn v\u00e0 l\u1ef1c c\u0103ng).<\/strong> M\u1ed1i gh\u00e9p b\u1eb1ng bu l\u00f4ng c\u00f3 \u0111\u01b0\u1eddng cong m\u00f4-men xo\u1eafn - l\u1ef1c c\u0103ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5. Bu l\u00f4ng c\u1ea5p 5 v\u00e0 c\u1ea5p 8 theo SAE (v\u00e0 c\u00e1c lo\u1ea1i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 8.8, 10.9, 12.9 theo h\u1ec7 m\u00e9t) \u0111\u1ec1u c\u00f3 b\u1ea3ng m\u00f4-men xo\u1eafn \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. \u0110i\u1ec1u n\u00e0y quan tr\u1ecdng trong k\u1ef9 thu\u1eadt k\u1ebft c\u1ea5u, m\u1eb7t b\u00edch b\u00ecnh ch\u1ecbu \u00e1p l\u1ef1c v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u00f4 t\u00f4.<\/li>\n<\/ol>\n<ol>\n<li><strong>\u1ee8ng d\u1ee5ng ch\u1ecbu t\u1ea3i c\u1eaft \u0111\u00e1ng k\u1ec3.<\/strong> Bu l\u00f4ng l\u1ee5c gi\u00e1c ren m\u1ed9t ph\u1ea7n c\u00f3 ph\u1ea7n th\u00e2n kh\u00f4ng ren \u0111\u00f3ng vai tr\u00f2 nh\u01b0 ch\u1ed1t ch\u1ecbu c\u1eaft k\u1ebft c\u1ea5u. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Bolted_joint\" target=\"_blank\" rel=\"noopener\">B\u00e0i vi\u1ebft Wikipedia v\u1ec1 m\u1ed1i gh\u00e9p bu l\u00f4ng<\/a> gi\u1ea3i th\u00edch r\u1eb1ng v\u1ecb tr\u00ed m\u1eb7t ph\u1eb3ng c\u1eaft \u2014 li\u1ec7u n\u00f3 \u0111i qua ph\u1ea7n ren hay ph\u1ea7n kh\u00f4ng ren \u2014 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu c\u1eaft c\u1ee7a bu l\u00f4ng. Thi\u1ebft k\u1ebf m\u1ed1i gh\u00e9p \u0111\u00fang s\u1ebd \u0111\u1eb7t m\u1eb7t ph\u1eb3ng c\u1eaft \u1edf th\u00e2n bu l\u00f4ng, kh\u00f4ng ph\u1ea3i \u1edf ph\u1ea7n ren.<\/li>\n<\/ol>\n<ol>\n<li><strong>B\u1ea1n \u0111ang li\u00ean k\u1ebft c\u00e1c th\u00e0nh ph\u1ea7n k\u1ebft c\u1ea5u th\u00e9p<\/strong> theo ti\u00eau chu\u1ea9n AISC.<\/li>\n<\/ol>\n<ol>\n<li><strong>C\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn l\u1ed7 xuy\u00ean t\u1eeb c\u1ea3 hai ph\u00eda.<\/strong><\/li>\n<\/ol>\n<h3>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng v\u00edt<\/h3>\n<p>S\u1eed d\u1ee5ng v\u00edt khi:<\/p>\n<ol>\n<li><strong>Ch\u1ec9 c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn t\u1eeb m\u1ed9t ph\u00eda.<\/strong> V\u00edt t\u1ef1 khoan, v\u00edt th\u1ea1ch cao v\u00e0 v\u00edt g\u1ed7 \u0111\u1ec1u c\u00f3 th\u1ec3 v\u1eb7n t\u1eeb m\u1ed9t ph\u00eda m\u00e0 kh\u00f4ng c\u1ea7n \u0111ai \u1ed1c.<\/li>\n<\/ol>\n<ol>\n<li><strong>V\u1eadt li\u1ec7u n\u1ec1n l\u00e0 g\u1ed7, nh\u1ef1a ho\u1eb7c t\u00f4n m\u1ecfng.<\/strong> Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y b\u00e1m ren v\u00edt tr\u1ef1c ti\u1ebfp \u2014 th\u00eam \u0111ai \u1ed1c s\u1ebd c\u1ea7n khoan xuy\u00ean, l\u00e0m y\u1ebfu v\u1eadt li\u1ec7u m\u1ecfng.<\/li>\n<\/ol>\n<ol>\n<li><strong>C\u1ee5m l\u1eafp r\u00e1p l\u00e0 b\u00e1n c\u1ed1 \u0111\u1ecbnh.<\/strong> V\u00edt \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t nhanh h\u01a1n v\u00e0 ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ed1i n\u1ed1i kh\u00f4ng b\u1ecb th\u00e1o ra nhi\u1ec1u l\u1ea7n.<\/li>\n<\/ol>\n<ol>\n<li><strong>Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u00f4ng gian l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng.<\/strong> Lo\u1ea1i b\u1ecf \u0111ai \u1ed1c gi\u00fap gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m v\u00f9ng kho\u1ea3ng c\u00e1ch c\u1ea7n thi\u1ebft ph\u00eda sau m\u1ed1i n\u1ed1i \u2014 \u0111i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn ng\u00e0nh h\u00e0ng kh\u00f4ng v\u00e0 \u0111\u00f3ng g\u00f3i \u0111i\u1ec7n t\u1eed.<\/li>\n<\/ol>\n<ol>\n<li><strong>L\u1eafp r\u00e1p s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng.<\/strong> V\u00edt t\u1ef1 khoan s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c l\u1eafp r\u00e1p b\u1eb1ng robot ho\u1eb7c b\u00e1n t\u1ef1 \u0111\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 cao v\u00e0 ki\u1ec3m so\u00e1t m\u00f4-men xo\u1eafn \u1ed5n \u0111\u1ecbnh.<\/li>\n<\/ol>\n<h3>C\u1ea5p v\u1eadt li\u1ec7u v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h3>\n<p>C\u00e1c <strong>c\u1ea5p v\u1eadt li\u1ec7u<\/strong> c\u1ee7a ch\u1ed1t li\u00ean k\u1ebft x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9. H\u1ea7u h\u1ebft s\u1ef1 nh\u1ea7m l\u1eabn v\u1ec1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt x\u1ea3y ra khi m\u1ecdi ng\u01b0\u1eddi b\u1ecf qua c\u1ea5p v\u1eadt li\u1ec7u \u2014 m\u1ed9t bu l\u00f4ng c\u1ea5p 2 v\u00e0 bu l\u00f4ng c\u1ea5p 8 tr\u00f4ng g\u1ea7n nh\u01b0 gi\u1ed1ng nhau nh\u01b0ng c\u00f3 t\u1ea3i tr\u1ecdng ki\u1ec3m ch\u1ee9ng r\u1ea5t kh\u00e1c nhau.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/difference-between-bolt-and-screw-howto.png\" alt=\"s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt \u2014 s\u01a1 \u0111\u1ed3 quy tr\u00ecnh cho th\u1ea5y d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u1ea5p bu l\u00f4ng tr\u00ean \u0111\u1ea7u v\u00e0 c\u00e1c b\u01b0\u1edbc si\u1ebft m\u00f4-men\" class=\"wp-image\"><\/p>\n<p><strong>Nh\u1eadn di\u1ec7n c\u1ea5p (bu l\u00f4ng h\u1ec7 inch):<\/strong><\/p>\n<ul>\n<li><strong>SAE C\u1ea5p 2<\/strong> (kh\u00f4ng c\u00f3 d\u1ea5u tr\u00ean \u0111\u1ea7u): th\u00e9p cacbon th\u1ea5p, \u0111\u1ed9 b\u1ec1n ki\u1ec3m ch\u1ee9ng t\u1ed1i thi\u1ec3u 55.000 psi. D\u00f9ng cho m\u1ee5c \u0111\u00edch chung, kh\u00f4ng k\u1ebft c\u1ea5u.<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 SAE 5<\/strong> (3 d\u1ea5u): th\u00e9p cacbon trung b\u00ecnh, \u0111\u1ed9 b\u1ec1n ki\u1ec3m ch\u1ee9ng 85.000 psi. Lo\u1ea1i bu l\u00f4ng k\u1ebft c\u1ea5u ph\u1ed5 bi\u1ebfn nh\u1ea5t trong x\u00e2y d\u1ef1ng t\u1ea1i Vi\u1ec7t Nam.<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 SAE 8<\/strong> (6 d\u1ea5u): th\u00e9p h\u1ee3p kim, \u0111\u1ed9 b\u1ec1n ki\u1ec3m ch\u1ee9ng 120.000 psi. D\u00f9ng cho \u1ee9ng d\u1ee5ng ch\u1ecbu l\u1ef1c cao \u2014 truy\u1ec1n \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng treo, b\u00ecnh \u00e1p l\u1ef1c.<\/li>\n<\/ul>\n<p><strong>C\u00e1c c\u1ea5p t\u00ednh ch\u1ea5t bu l\u00f4ng h\u1ec7 m\u00e9t:<\/strong><\/p>\n<ul>\n<li><strong>C\u1ea5p 8.8<\/strong>: \u0111\u1ed9 b\u1ec1n k\u00e9o 800 MPa, \u0111\u1ed9 b\u1ec1n ch\u1ea3y 640 MPa. T\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u1ea5p 5. Ti\u00eau chu\u1ea9n cho m\u00e1y m\u00f3c k\u1ebft c\u1ea5u.<\/li>\n<li><strong>C\u1ea5p 10.9<\/strong>: \u0111\u1ed9 b\u1ec1n k\u00e9o 1040 MPa, \u0111\u1ed9 b\u1ec1n ch\u1ea3y 940 MPa. \u0110\u1ed9 b\u1ec1n cao; y\u00eau c\u1ea7u si\u1ebft m\u00f4-men ki\u1ec3m so\u00e1t.<\/li>\n<li><strong>C\u1ea5p 12.9<\/strong>: \u0111\u1ed9 b\u1ec1n k\u00e9o 1220 MPa, \u0111\u1ed9 b\u1ec1n ch\u1ea3y 1100 MPa. C\u1ea5p bu l\u00f4ng h\u1ec7 m\u00e9t cao nh\u1ea5t; th\u01b0\u1eddng d\u00f9ng cho m\u00e1y m\u00f3c ch\u00ednh x\u00e1c v\u00e0 th\u1ec3 thao m\u00f4 t\u00f4.<\/li>\n<\/ul>\n<p><strong>B\u1ea2NG 3: So s\u00e1nh c\u1ea5p v\u1eadt li\u1ec7u bu l\u00f4ng v\u00e0 v\u00edt<\/strong><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i \/ L\u1edbp<\/th>\n<th>V\u1eadt li\u1ec7u<\/th>\n<th>\u0110\u1ed9 b\u1ec1n k\u00e9o<\/th>\n<th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<th>Nh\u1eadn di\u1ec7n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SAE C\u1ea5p 2<\/td>\n<td>Th\u00e9p carbon th\u1ea5p<\/td>\n<td>60.000 psi<\/td>\n<td>S\u1eed d\u1ee5ng chung, kh\u00f4ng k\u1ebft c\u1ea5u<\/td>\n<td>Kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea5p \u0111\u1ed9 SAE 5<\/td>\n<td>Th\u00e9p cacbon trung b\u00ecnh<\/td>\n<td>120.000 psi<\/td>\n<td>X\u00e2y d\u1ef1ng, k\u1ebft c\u1ea5u nh\u1eb9<\/td>\n<td>3 d\u1ea5u radial<\/td>\n<\/tr>\n<tr>\n<td>C\u1ea5p \u0111\u1ed9 SAE 8<\/td>\n<td>Th\u00e9p h\u1ee3p kim<\/td>\n<td>150.000 psi<\/td>\n<td>\u00d4 t\u00f4, m\u00e1y m\u00f3c n\u1eb7ng<\/td>\n<td>6 d\u1ea5u radial<\/td>\n<\/tr>\n<tr>\n<td>Metric 8.8<\/td>\n<td>Th\u00e9p carbon<\/td>\n<td>800 MPa<\/td>\n<td>M\u00e1y m\u00f3c, thi\u1ebft b\u1ecb<\/td>\n<td>\u0110\u00f3ng d\u1ea5u \u201c8.8\u201d<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n m\u00e9t 10.9<\/td>\n<td>Th\u00e9p h\u1ee3p kim<\/td>\n<td>1040 MPa<\/td>\n<td>L\u1eafp r\u00e1p ch\u1ecbu t\u1ea3i tr\u1ecdng l\u1edbn<\/td>\n<td>\u0110\u00f3ng d\u1ea5u \u201c10.9\u201d<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n m\u00e9t 12.9<\/td>\n<td>Th\u00e9p h\u1ee3p kim<\/td>\n<td>1220 MPa<\/td>\n<td>\u0110ua xe, m\u00e1y m\u00f3c ch\u00ednh x\u00e1c<\/td>\n<td>\u0110\u00f3ng d\u1ea5u \u201c12.9\u201d<\/td>\n<\/tr>\n<tr>\n<td>Inox A2<\/td>\n<td>Inox 304<\/td>\n<td>700 MPa<\/td>\n<td>Th\u1ef1c ph\u1ea9m, h\u00e0ng h\u1ea3i, ngo\u00e0i tr\u1eddi<\/td>\n<td>\u201cA2-70\u201d<\/td>\n<\/tr>\n<tr>\n<td>Inox A4<\/td>\n<td>316 SS<\/td>\n<td>800 MPa<\/td>\n<td>H\u00e0ng h\u1ea3i, h\u00f3a ch\u1ea5t<\/td>\n<td>\u201cA4-80\u201d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>As <a href=\"https:\/\/www.astm.org\/\" target=\"_blank\" rel=\"noopener\">ti\u00eau chu\u1ea9n v\u1ec1 \u1ed1c v\u00edt c\u1ee7a ASTM International<\/a> c\u1ea7n l\u00e0m r\u00f5, ch\u1ec9 \u0111\u1ecbnh \u201cbu l\u00f4ng\u201d ho\u1eb7c \u201cv\u00edt\u201d m\u00e0 kh\u00f4ng ghi r\u00f5 c\u1ea5p l\u00e0 ch\u01b0a \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 k\u1ef9 thu\u1eadt \u2014 \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n kh\u00e1c nhau \u0111\u00e1ng k\u1ec3 gi\u1eefa c\u00e1c c\u1ea5p.<\/p>\n<h2>Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai trong c\u00f4ng ngh\u1ec7 \u1ed1c v\u00edt (2026+)<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt \u0111ang tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n khi c\u00f4ng ngh\u1ec7 \u1ed1c v\u00edt ti\u1ebfn b\u1ed9. C\u1ea3 hai lo\u1ea1i \u0111\u1ec1u \u0111ang \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i b\u1edfi s\u1ea3n xu\u1ea5t th\u00f4ng minh, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 b\u1ec1n v\u1eefng, v\u00e0 v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn.<\/p>\n<h3>Ph\u1ee5 ki\u1ec7n th\u00f4ng minh v\u00e0 gi\u00e1m s\u00e1t l\u1ef1c si\u1ebft<\/h3>\n<p><strong>Bu l\u00f4ng c\u00f3 c\u1ea3m bi\u1ebfn \u0111o l\u01b0\u1eddng<\/strong> v\u1edbi c\u1ea3m bi\u1ebfn \u0111o \u1ee9ng su\u1ea5t ho\u1eb7c b\u1ed9 truy\u1ec1n si\u00eau \u00e2m t\u00edch h\u1ee3p c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u l\u1ef1c k\u1eb9p theo th\u1eddi gian th\u1ef1c \u0111\u1ebfn h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t. \u0110i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf s\u1ef1 suy \u0111o\u00e1n t\u1eeb m\u1ed1i quan h\u1ec7 gi\u1eefa m\u00f4-men xo\u1eafn v\u00e0 l\u1ef1c si\u1ebft \u2014 thay v\u00ec suy ra l\u1ef1c k\u1eb9p t\u1eeb m\u00f4-men xo\u1eafn \u0111\u00e3 \u00e1p d\u1ee5ng (bi\u1ebfn \u0111\u1ed9ng \u00b125\u201330% do ma s\u00e1t), b\u1ea1n \u0111o tr\u1ef1c ti\u1ebfp l\u1ef1c k\u1eb9p. Theo b\u00e1o c\u00e1o n\u0103m 2024 c\u1ee7a McKinsey &amp; Company v\u1ec1 vi\u1ec7c \u00e1p d\u1ee5ng IoT c\u00f4ng nghi\u1ec7p, b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n s\u1eed d\u1ee5ng c\u00e1c \u1ed1c v\u00edt c\u1ea3m bi\u1ebfn \u0111\u00e3 gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng d\u1ef1 ki\u1ebfn trong m\u00e1y m\u00f3c n\u1eb7ng l\u00ean t\u1edbi 181% trong c\u00e1c m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m.<\/p>\n<p><strong>Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c m\u00f4-men xo\u1eafn k\u1ef9 thu\u1eadt s\u1ed1<\/strong> \u0111ang tr\u1edf th\u00e0nh y\u00eau c\u1ea7u trong c\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a nh\u00e0 cung c\u1ea5p h\u00e0ng \u0111\u1ea7u trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u00e0 \u00f4 t\u00f4. M\u1ed7i l\u1ea7n si\u1ebft ch\u1eb7t bu l\u00f4ng \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi l\u1ea1i v\u1edbi gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn, g\u00f3c quay v\u00e0 th\u1eddi gian \u2014 cho ph\u00e9p truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ea7y \u0111\u1ee7 t\u1eeb l\u1eafp r\u00e1p \u0111\u1ebfn d\u1ecbch v\u1ee5 sau b\u00e1n h\u00e0ng. \u0110\u00e2y l\u00e0 m\u1ed9t b\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed5i v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng l\u00e0m m\u1edd ranh gi\u1edbi gi\u1eefa bu l\u00f4ng truy\u1ec1n th\u1ed1ng v\u00e0 \u1ed1c v\u00edt \u201cth\u00f4ng minh\u201d c\u1ee7a C\u00f4ng nghi\u1ec7p 4.0.<\/p>\n<h3>V\u1eadt li\u1ec7u v\u00e0 l\u1edbp ph\u1ee7 b\u1ec1n v\u1eefng<\/h3>\n<p>\u00c1p l\u1ef1c m\u00f4i tr\u01b0\u1eddng \u0111ang \u0111\u1ecbnh h\u00ecnh l\u1ea1i c\u00e1c ti\u00eau chu\u1ea9n ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t c\u1ee7a \u1ed1c v\u00edt. L\u1edbp ph\u1ee7 crom s\u00e1u (Cr6+) \u2014 \u0111\u00e3 l\u00e2u l\u00e0 ti\u00eau chu\u1ea9n ch\u1ed1ng \u0103n m\u00f2n \u2014 \u0111ang b\u1ecb lo\u1ea1i b\u1ecf theo quy \u0111\u1ecbnh c\u1ee7a EU REACH v\u00e0 ng\u00e0y c\u00e0ng b\u1ecb h\u1ea1n ch\u1ebf to\u00e0n c\u1ea7u. C\u00e1c l\u1edbp ph\u1ee7 thay th\u1ebf bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Chromate ba (Cr3+)<\/strong>: thay th\u1ebf d\u1ec5 d\u00e0ng v\u1edbi hi\u1ec7u su\u1ea5t phun mu\u1ed1i t\u01b0\u01a1ng t\u1ef1<\/li>\n<li><strong>Dacromet \/ Geomet<\/strong>: l\u1edbp ph\u1ee7 d\u1ea1ng v\u1ea3y k\u1ebdm-k\u1ebdm nh\u00f4m cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ed1ng phun mu\u1ed1i tr\u00ean 480 gi\u1edd m\u00e0 kh\u00f4ng c\u1ea7n crom s\u00e1u<\/li>\n<li><strong>K\u1ebdm-niken<\/strong>: ch\u1ed1ng phun mu\u1ed1i t\u1eeb 500\u20131000 gi\u1edd; ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng d\u01b0\u1edbi th\u00e2n xe \u00f4 t\u00f4<\/li>\n<\/ul>\n<p><strong>\u1ed0c v\u00edt titanium v\u00e0 nh\u00f4m<\/strong> \u2014 t\u1eebng d\u00e0nh ri\u00eang cho h\u00e0ng kh\u00f4ng \u2014 \u0111ang d\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng xe \u0111\u1ea1p cao c\u1ea5p, \u0111ua xe th\u1ec3 thao, v\u00e0 \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng khi chi ph\u00ed gia c\u00f4ng gi\u1ea3m xu\u1ed1ng. Titanium c\u00f3 t\u1ef7 l\u1ec7 \u0111\u1ed9 b\u1ec1n tr\u00ean tr\u1ecdng l\u01b0\u1ee3ng t\u1ed1t h\u01a1n h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i th\u00e9p v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi; nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 d\u1ec5 b\u1ecb g\u1ec9 s\u00e9t khi kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t ch\u1ed1ng g\u1ec9.<\/p>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa v\u00edt v\u00e0 bu l\u00f4ng l\u00e0 g\u00ec?<\/h3>\n<p>M\u1ed9t bu l\u00f4ng d\u1ef1a v\u00e0o m\u1ed9t \u0111ai \u1ed1c ri\u00eang \u0111\u1ec3 k\u1eb9p ch\u1eb7t c\u00e1c th\u00e0nh ph\u1ea7n l\u1ea1i v\u1edbi nhau; v\u00edt c\u00f3 ren tr\u1ef1c ti\u1ebfp v\u00e0o n\u1ec1n v\u00e0 \u0111\u01b0\u1ee3c si\u1ebft b\u1eb1ng \u0111\u1ea7u c\u1ee7a ch\u00ednh n\u00f3. Trong th\u1ef1c t\u1ebf: n\u1ebfu b\u1ea1n si\u1ebft b\u1eb1ng c\u00e1ch xoay \u0111ai \u1ed1c, \u0111\u00f3 l\u00e0 bu l\u00f4ng; n\u1ebfu b\u1ea1n xoay \u0111\u1ea7u v\u00edt, \u0111\u00f3 l\u00e0 v\u00edt \u2014 ngay c\u1ea3 khi tr\u00f4ng gi\u1ed1ng h\u1ec7t nhau.<\/p>\n<h3>Li\u1ec7u m\u1ed9t bu l\u00f4ng c\u00f3 ph\u1ea3i l\u00e0 v\u00edt kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng. Bu l\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u00e0m vi\u1ec7c c\u00f9ng v\u1edbi \u0111ai \u1ed1c ho\u1eb7c th\u00e0nh ph\u1ea7n gh\u00e9p n\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c khoan s\u1eb5n ren. Bu l\u00f4ng th\u01b0\u1eddng c\u00f3 th\u00e2n kh\u00f4ng ho\u00e0n to\u00e0n c\u00f3 ren \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1eaft \u2014 \u0111i\u1ec1u m\u00e0 v\u00edt t\u1ed1i \u01b0u cho vi\u1ec7c x\u00e2m nh\u1eadp v\u00e0o n\u1ec1n kh\u00f4ng c\u1ea7n. C\u00e1c thu\u1eadt ng\u1eef n\u00e0y th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn trong giao ti\u1ebfp h\u00e0ng ng\u00e0y, nh\u01b0ng s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 k\u1ef9 thu\u1eadt l\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi t\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng.<\/p>\n<h3>T\u1ea1i sao b\u1ea1n l\u1ea1i s\u1eed d\u1ee5ng bu l\u00f4ng thay v\u00ec v\u00edt?<\/h3>\n<p>Bu l\u00f4ng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean khi: (1) m\u1ed1i n\u1ed1i c\u1ea7n th\u00e1o r\u1eddi v\u00e0 l\u1eafp l\u1ea1i m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a \u1ed1c v\u00edt; (2) b\u1ea1n c\u1ea7n ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c m\u00f4-men xo\u1eafn v\u00e0 l\u1ef1c si\u1ebft; (3) c\u00f3 t\u1ea3i tr\u1ecdng c\u1eaft ho\u1eb7c c\u1ea5u tr\u00fac \u0111\u00e1ng k\u1ec3; (4) hai b\u00ean c\u1ee7a m\u1ed1i n\u1ed1i \u0111\u1ec1u c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn. Bu l\u00f4ng c\u0169ng cho ph\u00e9p thay th\u1ebf \u0111ai \u1ed1c ri\u00eang n\u1ebfu ren b\u1ecb tr\u01b0\u1ee3t, trong khi v\u00edt b\u1ecb tr\u01b0\u1ee3t ren n\u1ec1n c\u00f3 th\u1ec3 c\u1ea7n s\u1eeda ch\u1eefa b\u1eb1ng helicoil ho\u1eb7c khoan l\u1ea1i.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa v\u00edt Allen v\u00e0 bu l\u00f4ng l\u00e0 g\u00ec?<\/h3>\n<p>\u201cAllen\u201d \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ki\u1ec3u \u0111\u1ea7u xoay \u2014 m\u1ed9t l\u1ed7 trong h\u00ecnh l\u1ee5c gi\u00e1c (c\u00f2n g\u1ecdi l\u00e0 l\u1ed7 l\u1ee5c gi\u00e1c ho\u1eb7c lo\u1ea1i ISTA) ch\u1ee9 kh\u00f4ng ph\u1ea3i lo\u1ea1i \u1ed1c v\u00edt. M\u1ed9t bu l\u00f4ng Allen c\u00f3 \u0111\u1ea7u l\u1ee5c gi\u00e1c v\u00e0 d\u00f9ng v\u1edbi \u0111ai \u1ed1c; m\u1ed9t v\u00edt Allen (\u1ed1c v\u00edt \u0111\u1ea7u ch\u1ee5p l\u1ee5c gi\u00e1c) \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t b\u1eb1ng c\u00e1ch xoay ch\u00ednh \u0111\u1ea7u c\u1ee7a n\u00f3. C\u1ea3 hai \u0111\u1ec1u s\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 Allen (kh\u00f3a l\u1ee5c gi\u00e1c) \u0111\u1ec3 l\u1eafp \u0111\u1eb7t. C\u00e1c v\u00edt \u0111\u1ea7u ch\u1ee5p l\u1ee5c gi\u00e1c ph\u1ed5 bi\u1ebfn trong m\u00e1y m\u00f3c ch\u00ednh x\u00e1c v\u00ec kh\u1ea3 n\u0103ng khoan l\u1ed3i v\u00e0o c\u00e1c kh\u00f4ng gian ch\u1eadt h\u1eb9p nh\u1edd ki\u1ec3u \u0111\u1ea7u l\u1ed3i.<\/p>\n<h3>S\u1ee9c m\u1ea1nh c\u1ee7a bu l\u00f4ng so v\u1edbi v\u00edt trong m\u1ed9t m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u l\u00e0 g\u00ec?<\/h3>\n<p>Theo t\u1eebng c\u1ea5p \u0111\u1ed9, bu l\u00f4ng th\u01b0\u1eddng m\u1ea1nh h\u01a1n v\u1ec1 l\u1ef1c k\u00e9o (khi \u0111\u01b0\u1ee3c si\u1ebft \u0111\u00fang b\u1eb1ng \u0111ai \u1ed1c) v\u00e0 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 l\u1ef1c c\u1eaft (ph\u1ea7n th\u00e2n kh\u00f4ng c\u00f3 ren n\u1eb1m trong m\u1eb7t ph\u1eb3ng c\u1eaft). V\u00edt \u0111\u01b0\u1ee3c v\u1eb7n v\u00e0o g\u1ed7 ho\u1eb7c t\u1ea5m kim lo\u1ea1i l\u1ea5y s\u1ee9c k\u00e9o ra t\u1eeb \u0111\u1ed9 s\u00e2u \u0103n ren v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u n\u1ec1n. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ed1i n\u1ed1i th\u00e9p k\u1ebft c\u1ea5u, ch\u1ec9 nh\u1eefng bu l\u00f4ng \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n AISC (th\u01b0\u1eddng l\u00e0 ASTM A325 ho\u1eb7c A490, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ea5p 8.8\/10.9) m\u1edbi \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn.<\/p>\n<h3>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng v\u00edt thay v\u00ec bu l\u00f4ng kh\u00f4ng?<\/h3>\n<p>Trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng mang t\u00ednh k\u1ebft c\u1ea5u \u2014 khung g\u1ed7, t\u1ea5m kim lo\u1ea1i, v\u1ecf nh\u1ef1a \u2014 th\u01b0\u1eddng c\u00f3 th\u1ec3 thay th\u1ebf. Nh\u01b0ng trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft c\u1ea5u, ch\u1ee9a \u00e1p su\u1ea5t ho\u1eb7c quan tr\u1ecdng v\u1ec1 an to\u00e0n th\u00ec kh\u00f4ng. Lu\u00f4n ki\u1ec3m tra ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf \u00e1p d\u1ee5ng (AISC cho th\u00e9p k\u1ebft c\u1ea5u, ASME Section VIII cho b\u00ecnh ch\u1ecbu \u00e1p l\u1ef1c, NEC cho \u0111i\u1ec7n) tr\u01b0\u1edbc khi thay \u0111\u1ed5i lo\u1ea1i ch\u1ed1t.<\/p>\n<h3>\u201cS\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u0111ai \u1ed1c, bu l\u00f4ng v\u00e0 v\u00edt\u201d c\u00f3 \u00fd ngh\u0129a g\u00ec trong th\u1ef1c t\u1ebf?<\/h3>\n<p>A <strong>\u0111ai \u1ed1c<\/strong> l\u00e0 th\u00e0nh ph\u1ea7n c\u00f3 ren gh\u00e9p n\u1ed1i v\u1edbi bu l\u00f4ng. <strong>bu l\u00f4ng<\/strong> l\u00e0 ch\u1ed1t c\u00f3 ren ngo\u00e0i \u0111i qua l\u1ed7 tho\u00e1t v\u00e0 \u0111\u01b0\u1ee3c gi\u1eef b\u1edfi \u0111ai \u1ed1c. <strong>v\u00edt<\/strong> l\u00e0 ch\u1ed1t c\u00f3 ren ngo\u00e0i t\u1ea1o ho\u1eb7c \u0103n ren tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n. Bu l\u00f4ng + \u0111ai \u1ed1c t\u1ea1o th\u00e0nh h\u1ec7 th\u1ed1ng ch\u1ed1t ho\u00e0n ch\u1ec9nh; v\u00edt t\u1ef1 \u0111\u1ee7 trong v\u1eadt li\u1ec7u n\u1ec1n.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/productionscrews.com\/wp-content\/uploads\/2026\/05\/difference-between-bolt-and-screw-closing.png\" alt=\"s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt \u2014 h\u00ecnh \u1ea3nh k\u1ebft th\u00fac cho th\u1ea5y b\u1ed9 s\u01b0u t\u1eadp bu l\u00f4ng v\u00e0 v\u00edt s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo lo\u1ea1i v\u00e0 k\u00edch th\u01b0\u1edbc\" class=\"wp-image\"><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ec1 m\u1eb7t ng\u00f4n ng\u1eef \u2014 n\u00f3 quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i, ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t, kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh. Bu l\u00f4ng k\u1ebft h\u1ee3p v\u1edbi \u0111ai \u1ed1c cung c\u1ea5p l\u1ef1c k\u1eb9p ch\u00ednh x\u00e1c, c\u00f3 th\u1ec3 si\u1ebft l\u1ea1i ph\u00f9 h\u1ee3p cho c\u00e1c c\u1ee5m k\u1ebft c\u1ea5u v\u00e0 c\u01a1 kh\u00ed. V\u00edt v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n gi\u00fap l\u1eafp \u0111\u1eb7t nhanh h\u01a1n v\u00e0 ch\u1ec9 c\u1ea7n ti\u1ebfp c\u1eadn m\u1ed9t ph\u00eda, nh\u01b0ng tu\u1ed5i th\u1ecd ren c\u1ee7a v\u1eadt li\u1ec7u n\u1ec1n s\u1ebd gi\u1ea3m.<\/p>\n<p>H\u00e3y s\u1eed d\u1ee5ng b\u1ea3ng v\u00e0 khung l\u1ef1a ch\u1ecdn trong h\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u cho m\u1ed1i n\u1ed1i c\u1ee7a b\u1ea1n \u2014 v\u1eadt li\u1ec7u n\u1ec1n, lo\u1ea1i t\u1ea3i, t\u1ea7n su\u1ea5t l\u1eafp r\u00e1p v\u00e0 ti\u00eau chu\u1ea9n c\u1ea5p \u2014 tr\u01b0\u1edbc khi \u0111\u1eb7t mua ch\u1ed1t. \u0110\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t, ch\u1ecdn sai lo\u1ea1i ch\u1ed1t kh\u00f4ng ch\u1ec9 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p m\u00e0 c\u00f2n g\u00e2y ra l\u1ed7i ch\u1ea5t l\u01b0\u1ee3ng xu\u1ea5t hi\u1ec7n ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng. \u0110\u1ed1i v\u1edbi ngu\u1ed3n cung v\u00edt s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt theo c\u1ea5p v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u1ee9ng d\u1ee5ng, \u0111\u1ed9i ng\u0169 c\u1ee7a Production Screws s\u1eb5n s\u00e0ng gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh \u0111\u00fang th\u00f4ng s\u1ed1 ngay t\u1eeb l\u1ea7n \u0111\u1ea7u.<\/p>","protected":false},"excerpt":{"rendered":"<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa bu l\u00f4ng v\u00e0 v\u00edt n\u1eb1m \u1edf c\u00e1ch m\u1ed7i lo\u1ea1i ch\u1ed1t truy\u1ec1n t\u1ea3i l\u1ef1c. H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 n\u00e0y bao g\u1ed3m c\u00e1c lo\u1ea1i, c\u1ea5p \u0111\u1ed9, so s\u00e1nh \u0111\u1ed9 b\u1ec1n v\u00e0 khung l\u1ef1a ch\u1ecdn th\u1ef1c t\u1ebf cho k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi l\u00e0m t\u1ef1 ch\u1ebf.<\/p>","protected":false},"author":1,"featured_media":3870,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3898","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-screws-flange-tutorial"],"_links":{"self":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/3898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/comments?post=3898"}],"version-history":[{"count":1,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/3898\/revisions"}],"predecessor-version":[{"id":3902,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/posts\/3898\/revisions\/3902"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media\/3870"}],"wp:attachment":[{"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/media?parent=3898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/categories?post=3898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/productionscrews.com\/vi\/wp-json\/wp\/v2\/tags?post=3898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}