{"id":5004,"date":"2026-09-08T12:09:24","date_gmt":"2026-09-08T12:09:24","guid":{"rendered":"https:\/\/productionscrews.com\/screw-size-chart\/"},"modified":"2026-09-08T15:25:21","modified_gmt":"2026-09-08T15:25:21","slug":"screw-size-chart","status":"publish","type":"post","link":"https:\/\/productionscrews.com\/vi\/screw-size-chart\/","title":{"rendered":"B\u1ea3ng k\u00edch th\u01b0\u1edbc v\u00edt: K\u00edch th\u01b0\u1edbc h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch, K\u00edch th\u01b0\u1edbc & H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn"},"content":{"rendered":"
\n

B\u1ea3ng k\u00edch th\u01b0\u1edbc v\u00edt: K\u00edch th\u01b0\u1edbc h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch, K\u00edch th\u01b0\u1edbc & H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn<\/h1>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o th\u1ef1c t\u1ebf t\u1eeb \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt DingLong Hardware \u00b7 C\u1eadp nh\u1eadt th\u00e1ng 9 n\u0103m 2026 \u00b7 D\u00e0nh cho k\u1ef9 s\u01b0, \u0111\u1ed9i mua h\u00e0ng, ng\u01b0\u1eddi mua b\u1ea3o tr\u00ec, nh\u00e0 ph\u00e2n ph\u1ed1i v\u00e0 qu\u1ea3n l\u00fd d\u1ef1 \u00e1n OEM<\/p>\n

K\u00edch th\u01b0\u1edbc v\u00edt kh\u00f4ng ch\u1ec9 l\u00e0 chi\u1ec1u d\u00e0i in tr\u00ean t\u00fai. Th\u00f4ng s\u1ed1 \u0111\u1ea7y \u0111\u1ee7 th\u01b0\u1eddng k\u1ebft h\u1ee3p h\u1ec7 ren, \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a, b\u01b0\u1edbc ren ho\u1eb7c s\u1ed1 ren tr\u00ean m\u1ed7i inch, chi\u1ec1u d\u00e0i, ki\u1ec3u \u0111\u1ea7u, v\u1eadt li\u1ec7u, l\u1edbp ho\u00e0n thi\u1ec7n v\u00e0 \u0111\u00f4i khi l\u00e0 c\u1ea5p \u0111\u1ed9 b\u1ec1n ho\u1eb7c c\u1ea5p \u0111\u1ed9 dung sai. b\u1ea3ng k\u00edch th\u01b0\u1edbc v\u00edt<\/strong> gi\u00fap b\u1ea1n c\u00f3 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u nhanh, sau \u0111\u00f3 h\u01b0\u1edbng d\u1eabn c\u00e1ch \u0111o m\u1ed9t ch\u1ed1t ch\u01b0a x\u00e1c \u0111\u1ecbnh v\u00e0 chuy\u1ec3n k\u1ebft qu\u1ea3 th\u00e0nh y\u00eau c\u1ea7u s\u1ea3n xu\u1ea5t.<\/p>\n

\nC\u00e2u tr\u1ea3 l\u1eddi nhanh:<\/strong> x\u00e1c \u0111\u1ecbnh v\u00edt v\u1edbi b\u1ed1n ph\u00e9p \u0111o ban \u0111\u1ea7u: \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a<\/strong>, b\u01b0\u1edbc ren<\/strong> cho h\u1ec7 m\u00e9t ho\u1eb7c s\u1ed1 ren tr\u00ean inch (TPI)<\/strong> cho ren inch, v\u00e0 chi\u1ec1u d\u00e0i \u0111o theo ki\u1ec3u \u0111\u1ea7u<\/strong>. Sau \u0111\u00f3 x\u00e1c nh\u1eadn ti\u00eau chu\u1ea9n ren, v\u1eadt li\u1ec7u, l\u1edbp ho\u00e0n thi\u1ec7n v\u00e0 \u0111ai \u1ed1c ho\u1eb7c l\u1ed7 ren ph\u00f9 h\u1ee3p. V\u00ed d\u1ee5, M8 \u00d7 1.25 \u00d7 40 mm<\/strong> c\u00f3 ngh\u0129a l\u00e0 \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a h\u1ec7 m\u00e9t 8 mm, b\u01b0\u1edbc ren 1.25 mm v\u00e0 chi\u1ec1u d\u00e0i 40 mm.\n<\/div>\n
\"C\u00e1c
B\u1eaft \u0111\u1ea7u v\u1edbi h\u1ec7 ren, \u0111\u01b0\u1eddng k\u00ednh, b\u01b0\u1edbc ren v\u00e0 chi\u1ec1u d\u00e0i; h\u00ecnh d\u1ea1ng \u0111\u1ea7u v\u00e0 \u1ee9ng d\u1ee5ng ho\u00e0n thi\u1ec7n th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/figcaption><\/figure>\n

B\u1ea3ng k\u00edch th\u01b0\u1edbc v\u00edt h\u1ec7 m\u00e9t<\/h2>\n

K\u00fd hi\u1ec7u v\u00edt m\u00e1y h\u1ec7 m\u00e9t b\u1eaft \u0111\u1ea7u b\u1eb1ng M<\/strong>, ti\u1ebfp theo l\u00e0 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn danh ngh\u0129a t\u00ednh b\u1eb1ng milim\u00e9t. B\u01b0\u1edbc ren \u0111\u01b0\u1ee3c th\u00eam v\u00e0o khi c\u1ea7n x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c lo\u1ea1i ren. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y li\u1ec7t k\u00ea c\u00e1c k\u1ebft h\u1ee3p ren th\u00f4 ph\u1ed5 bi\u1ebfn \u0111\u1ec3 tham kh\u1ea3o nhanh. ISO 262:2023 quy \u0111\u1ecbnh c\u00e1c k\u1ebft h\u1ee3p \u0111\u01b0\u1eddng k\u00ednh v\u00e0 b\u01b0\u1edbc ren \u0111\u01b0\u1ee3c ch\u1ecdn cho ren v\u00edt h\u1ec7 m\u00e9t th\u01b0\u01a1ng m\u1ea1i, trong khi ISO 724:2023 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn k\u00edch th\u01b0\u1edbc ren c\u01a1 b\u1ea3n h\u1ec7 m\u00e9t. Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m v\u00e0 c\u1ea5p \u0111\u1ed9 dung sai v\u1eabn ki\u1ec3m so\u00e1t ph\u1ea7n ho\u00e0n thi\u1ec7n.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
K\u00fd hi\u1ec7u<\/th>\n\u0110\u01b0\u1eddng k\u00ednh danh ngh\u0129a<\/th>\nB\u01b0\u1edbc Ren<\/th>\nGhi ch\u00fa th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n
M2 \u00d7 0,4<\/strong><\/td>\n2 mm<\/td>\n0.4 mm<\/td>\nL\u1eafp r\u00e1p ch\u00ednh x\u00e1c nh\u1ecf; ki\u1ec3m tra kho\u1ea3ng c\u00e1ch \u0111\u1ea7u v\u00e0 khe d\u1eabn \u0111\u1ed9ng.<\/td>\n<\/tr>\n
M2.5 \u00d7 0.45<\/strong><\/td>\n2,5 mm<\/td>\n0,45 mm<\/td>\nL\u1eafp r\u00e1p thi\u1ebft b\u1ecb nh\u1eb9 v\u00e0 d\u1ee5ng c\u1ee5.<\/td>\n<\/tr>\n
M3 \u00d7 0.5<\/strong><\/td>\n3 mm<\/td>\n0,5 mm<\/td>\nK\u00edch th\u01b0\u1edbc v\u00edt m\u00e1y nh\u1ecf ph\u1ed5 bi\u1ebfn.<\/td>\n<\/tr>\n
M4 \u00d7 0.7<\/strong><\/td>\n4 mm<\/td>\n0.7 mm<\/td>\nThi\u1ebft b\u1ecb chung, gi\u00e1 \u0111\u1ee1 v\u00e0 v\u1ecf b\u1ecdc.<\/td>\n<\/tr>\n
M5 \u00d7 0.8<\/strong><\/td>\n5 mm<\/td>\n0.8 mm<\/td>\nLi\u00ean k\u1ebft k\u1ebft c\u1ea5u v\u00e0 thi\u1ebft b\u1ecb nh\u1eb9.<\/td>\n<\/tr>\n
M6 \u00d7 1.0<\/strong><\/td>\n6 mm<\/td>\n1.0 mm<\/td>\nV\u00edt m\u00e1y v\u00e0 v\u00edt l\u1eafp ph\u1ed5 bi\u1ebfn.<\/td>\n<\/tr>\n
M8 \u00d7 1.25<\/strong><\/td>\n8 mm<\/td>\n1.25 mm<\/td>\nPh\u1ee5 ki\u1ec7n thi\u1ebft b\u1ecb, khung v\u00e0 m\u1eb7t b\u00edch ph\u1ed5 bi\u1ebfn.<\/td>\n<\/tr>\n
M10 \u00d7 1.5<\/strong><\/td>\n10 mm<\/td>\n1.5 mm<\/td>\nLi\u00ean k\u1ebft chung ch\u1ecbu t\u1ea3i cao; x\u00e1c nh\u1eadn c\u1ea5p \u0111\u1ed9 v\u1eadt li\u1ec7u.<\/td>\n<\/tr>\n
M12 \u00d7 1.75<\/strong><\/td>\n12 mm<\/td>\n1.75 mm<\/td>\nKhung, m\u00e1y m\u00f3c v\u00e0 k\u1ebft n\u1ed1i m\u1eb7t b\u00edch.<\/td>\n<\/tr>\n
M16 \u00d7 2.0<\/strong><\/td>\n16 mm<\/td>\n2.0 mm<\/td>\nV\u00edt k\u1ebft c\u1ea5u ho\u1eb7c thi\u1ebft b\u1ecb l\u1edbn; n\u00ean xem x\u00e9t b\u1ea3n v\u1ebd.<\/td>\n<\/tr>\n
M20 \u00d7 2.5<\/strong><\/td>\n20 mm<\/td>\n2,5 mm<\/td>\nThi\u1ebft b\u1ecb l\u1edbn v\u00e0 k\u1ebft n\u1ed1i k\u1ebft c\u1ea5u; h\u00e3y ch\u1ec9 \u0111\u1ecbnh c\u1ea5p v\u00e0 ti\u00eau chu\u1ea9n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u0110\u1ed1i v\u1edbi y\u00eau c\u1ea7u M2 c\u1ee5 th\u1ec3, h\u00e3y s\u1eed d\u1ee5ng H\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc v\u00edt M2<\/a>. \u0110\u00e2y v\u1eabn l\u00e0 n\u01a1i t\u1ed1t nh\u1ea5t cho k\u00edch th\u01b0\u1edbc \u0111\u1ea7u M2 v\u00e0 c\u00e1c chi ti\u1ebft li\u00ean quan; trang n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1ed5ng th\u1ec3.<\/p>\n

\"C\u00e1c
Bu l\u00f4ng h\u1ec7 m\u00e9t v\u00e0 h\u1ec7 inch s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u kh\u00e1c nhau v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc khi ch\u1ecdn thay th\u1ebf.<\/figcaption><\/figure>\n

B\u1ea3ng k\u00edch th\u01b0\u1edbc v\u00edt h\u1ec7 inch: UNC v\u00e0 UNF<\/h2>\n

Ren inch th\u1ed1ng nh\u1ea5t s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a v\u00e0 s\u1ed1 l\u01b0\u1ee3ng ren tr\u00ean m\u1ed7i inch. UNC<\/strong> c\u00f3 ngh\u0129a l\u00e0 Ren th\u00f4 qu\u1ed1c gia th\u1ed1ng nh\u1ea5t v\u00e0 UNF<\/strong> c\u00f3 ngh\u0129a l\u00e0 Ren m\u1ecbn qu\u1ed1c gia th\u1ed1ng nh\u1ea5t. ASME B1.1-2024 \u0111\u1ecbnh ngh\u0129a h\u00ecnh d\u1ea1ng ren inch th\u1ed1ng nh\u1ea5t, chu\u1ed7i, c\u1ea5p, kho\u1ea3ng c\u00e1ch, dung sai v\u00e0 k\u00fd hi\u1ec7u. C\u00e1c h\u00e0ng sau l\u00e0 c\u00e1c k\u1ebft h\u1ee3p tham kh\u1ea3o ph\u1ed5 bi\u1ebfn; th\u00f4ng s\u1ed1 \u0111\u1ea7y \u0111\u1ee7 c\u0169ng c\u00f3 th\u1ec3 c\u1ea7n c\u1ea5p ren v\u00e0 ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc danh ngh\u0129a<\/th>\n\u0110\u01b0\u1eddng k\u00ednh l\u1edbn x\u1ea5p x\u1ec9<\/th>\nTPI UNC<\/th>\nTPI UNF<\/th>\n<\/tr>\n<\/thead>\n
#2<\/strong><\/td>\n0.0860 in<\/td>\n56<\/td>\n64<\/td>\n<\/tr>\n
#4<\/strong><\/td>\n0.1120 in<\/td>\n40<\/td>\n48<\/td>\n<\/tr>\n
#6<\/strong><\/td>\n0.1380 in<\/td>\n32<\/td>\n40<\/td>\n<\/tr>\n
#8<\/strong><\/td>\n0.1640 in<\/td>\n32<\/td>\n36<\/td>\n<\/tr>\n
#10<\/strong><\/td>\n0.1900 in<\/td>\n24<\/td>\n32<\/td>\n<\/tr>\n
1\/4 in<\/strong><\/td>\n0.2500 in<\/td>\n20<\/td>\n28<\/td>\n<\/tr>\n
5\/16 inch<\/strong><\/td>\n0,3125 inch<\/td>\n18<\/td>\n24<\/td>\n<\/tr>\n
3\/8 inch<\/strong><\/td>\n0,3750 inch<\/td>\n16<\/td>\n24<\/td>\n<\/tr>\n
7\/16 inch<\/strong><\/td>\n0,4375 inch<\/td>\n14<\/td>\n20<\/td>\n<\/tr>\n
1\/2 inch<\/strong><\/td>\n0,5000 inch<\/td>\n13<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

S\u1ed1 sau d\u1ea5u g\u1ea1ch l\u00e0 TPI, v\u00ec v\u1eady 1\/4-20 UNC<\/strong> c\u00f3 \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a 1\/4 inch v\u00e0 20 ren tr\u00ean m\u1ed7i inch. M\u1ed9t ch\u1ed1t inch ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u \u201c1\/4\u201d l\u00e0 ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 \u0111\u1eb7t h\u00e0ng v\u00ec kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c lo\u1ea1i ren ho\u1eb7c chi\u1ec1u d\u00e0i. Kh\u00f4ng n\u00ean d\u00f9ng \u0111\u01b0\u1eddng k\u00ednh t\u01b0\u01a1ng t\u1ef1 c\u1ee7a h\u1ec7 m\u00e9t thay th\u1ebf cho ren inch; b\u01b0\u1edbc ren v\u00e0 h\u00ecnh d\u1ea1ng ren ph\u1ea3i ph\u00f9 h\u1ee3p.<\/p>\n

C\u00e1ch \u0111\u1ecdc k\u00edch th\u01b0\u1edbc v\u00edt<\/h2>\n

M\u1ed9t th\u00f4ng s\u1ed1 h\u1eefu \u00edch gi\u00fap ng\u01b0\u1eddi kh\u00e1c \u0111\u1eb7t h\u00e0ng ho\u1eb7c ki\u1ec3m tra c\u00f9ng m\u1ed9t b\u1ed9 ph\u1eadn m\u00e0 kh\u00f4ng ph\u1ea3i \u0111o\u00e1n. \u0110\u1ecdc c\u00e1c tr\u01b0\u1eddng theo th\u1ee9 t\u1ef1 sau:<\/p>\n

    \n
  1. H\u1ec7 th\u1ed1ng ren:<\/strong> h\u1ec7 m\u00e9t, h\u1ec7 inch th\u1ed1ng nh\u1ea5t, h\u1ec7 \u1ed1ng, ho\u1eb7c m\u1ed9t nh\u00f3m ren \u0111\u1eb7c bi\u1ec7t.<\/li>\n
  2. \u0110\u01b0\u1eddng k\u00ednh danh ngh\u0129a:<\/strong> \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u01a1 b\u1ea3n c\u1ee7a ren, nh\u01b0 M8 ho\u1eb7c 1\/4 inch.<\/li>\n
  3. B\u01b0\u1edbc ren ho\u1eb7c TPI:<\/strong> kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u1ec9nh ren h\u1ec7 m\u00e9t ho\u1eb7c s\u1ed1 l\u01b0\u1ee3ng ren h\u1ec7 inch tr\u00ean m\u1ed9t inch.<\/li>\n
  4. Chi\u1ec1u d\u00e0i:<\/strong> \u0111\u01b0\u1ee3c \u0111o t\u1eeb \u0111i\u1ec3m tham chi\u1ebfu \u0111\u1ea7u \u0111\u00fang \u0111\u1ebfn \u0111\u1ea7u m\u0169i.<\/li>\n
  5. \u0110\u1ea7u v\u00e0 ki\u1ec3u v\u1eb7n:<\/strong> \u0111\u1ea7u l\u1ee5c gi\u00e1c, m\u1eb7t b\u00edch l\u1ee5c gi\u00e1c, \u0111\u1ea7u tr\u00f2n, \u0111\u1ea7u ch\u00ecm, v\u00edt ch\u1ec9nh, ho\u1eb7c d\u1ea1ng kh\u00e1c, c\u00f9ng v\u1edbi ki\u1ec3u r\u00e3nh v\u1eb7n.<\/li>\n
  6. V\u1eadt li\u1ec7u, c\u1ea5p \u0111\u1ed9, ho\u00e0n thi\u1ec7n v\u00e0 dung sai:<\/strong> c\u00e1c th\u00f4ng s\u1ed1 l\u00e0m cho ch\u1ed1t ph\u00f9 h\u1ee3p v\u1edbi t\u1ea3i tr\u1ecdng, m\u00f4i tr\u01b0\u1eddng v\u00e0 chi ti\u1ebft l\u1eafp gh\u00e9p.<\/li>\n<\/ol>\n

    V\u00ed d\u1ee5, V\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c M8 \u00d7 1.25 \u00d7 40 mm, th\u00e9p kh\u00f4ng g\u1ec9, \u0111\u00e3 th\u1ee5 \u0111\u1ed9ng h\u00f3a<\/strong> gi\u00fap ng\u01b0\u1eddi mua ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n so v\u1edbi \u201cv\u00edt inox 8 mm.\u201d N\u1ebfu chi ti\u1ebft l\u00e0 bu l\u00f4ng m\u1eb7t b\u00edch, m\u1ed9t \u1ed0c flange hex DIN 6921<\/a> trang c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m t\u1ed1t h\u01a1n sau khi \u0111\u00e3 x\u00e1c nh\u1eadn k\u00edch th\u01b0\u1edbc ren.<\/p>\n

    \"Th\u01b0\u1edbc
    \u0110o \u0111\u01b0\u1eddng k\u00ednh ren t\u1ea1i ph\u1ea7n \u0111\u1ec9nh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc danh ngh\u0129a ban \u0111\u1ea7u; ghi l\u1ea1i ti\u00eau chu\u1ea9n tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t.<\/figcaption><\/figure>\n

    C\u00e1ch \u0111o \u0111\u01b0\u1eddng k\u00ednh, b\u01b0\u1edbc ren v\u00e0 chi\u1ec1u d\u00e0i v\u00edt<\/h2>\n

    1. \u0110o \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a<\/h3>\n

    S\u1eed d\u1ee5ng th\u01b0\u1edbc c\u1eb7p s\u1ea1ch v\u00e0 \u0111o qua \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a ph\u1ea7n ren. K\u1ebft qu\u1ea3 s\u1ebd dao \u0111\u1ed9ng nh\u1eb9 so v\u1edbi k\u00edch th\u01b0\u1edbc danh ngh\u0129a do dung sai s\u1ea3n xu\u1ea5t, h\u00ecnh h\u1ecdc ren, hao m\u00f2n, b\u1ee5i b\u1ea9n, l\u1edbp ph\u1ee7 v\u00e0 v\u1ecb tr\u00ed c\u1ee7a m\u1ecf th\u01b0\u1edbc. K\u1ebft qu\u1ea3 g\u1ea7n 8 mm g\u1ee3i \u00fd thu\u1ed9c nh\u00f3m M8, nh\u01b0ng ch\u01b0a x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c b\u01b0\u1edbc ren hay c\u1ea5p dung sai. Ghi l\u1ea1i s\u1ed1 \u0111o v\u00e0 so s\u00e1nh v\u1edbi d\u01b0\u1ee1ng ren ho\u1eb7c \u0111ai \u1ed1c l\u1eafp gh\u00e9p \u0111\u00e3 bi\u1ebft.<\/p>\n

    2. X\u00e1c nh\u1eadn b\u01b0\u1edbc ren ho\u1eb7c TPI<\/h3>\n

    B\u01b0\u1edbc ren h\u1ec7 m\u00e9t l\u00e0 kho\u1ea3ng c\u00e1ch t\u00ednh b\u1eb1ng milim\u00e9t t\u1eeb \u0111\u1ec9nh ren n\u00e0y \u0111\u1ebfn \u0111\u1ec9nh ren k\u1ebf ti\u1ebfp. B\u01b0\u1edbc ren h\u1ec7 inch th\u01b0\u1eddng \u0111\u01b0\u1ee3c ghi l\u00e0 TPI, \u0111\u1ebfm s\u1ed1 \u0111\u1ec9nh ren tr\u00ean m\u1ed9t inch. D\u01b0\u1ee1ng \u0111o b\u01b0\u1edbc ren nhanh v\u00e0 ch\u00ednh x\u00e1c h\u01a1n so v\u1edbi \u01b0\u1edbc l\u01b0\u1ee3ng b\u1eb1ng m\u1eaft. Th\u1eed t\u1eebng l\u00e1 d\u01b0\u1ee1ng cho \u0111\u1ebfn khi r\u0103ng kh\u1edbp s\u00e1t m\u00e0 kh\u00f4ng b\u1ecb l\u1eafc; d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p th\u1ee9 hai khi ch\u1ed1t b\u1ecb h\u1ecfng ho\u1eb7c c\u00f3 l\u1edbp ph\u1ee7.<\/p>\n

    \"L\u00e1
    B\u01b0\u1edbc ren l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111\u1ec9nh ren h\u1ec7 m\u00e9t; d\u01b0\u1ee1ng h\u1ec7 inch x\u00e1c \u0111\u1ecbnh ki\u1ec3u TPI.<\/figcaption><\/figure>\n

    3. \u0110o chi\u1ec1u d\u00e0i t\u1eeb v\u1ecb tr\u00ed \u0111\u1ea7u ph\u00f9 h\u1ee3p<\/h3>\n

    V\u1edbi h\u1ea7u h\u1ebft v\u00edt v\u00e0 bu l\u00f4ng kh\u00f4ng ch\u00ecm \u0111\u1ea7u, \u0111o t\u1eeb m\u1eb7t d\u01b0\u1edbi c\u1ee7a \u0111\u1ea7u \u0111\u1ebfn \u0111\u1ea7u m\u00fat. V\u1edbi v\u00edt ch\u00ecm \u0111\u1ea7u, \u0111o to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i t\u1eeb \u0111\u1ec9nh \u0111\u1ea7u \u0111\u1ebfn \u0111\u1ea7u m\u00fat v\u00ec \u0111\u1ea7u v\u00edt n\u1eb1m trong v\u1eadt li\u1ec7u. V\u00edt ch\u1ec9nh kh\u00f4ng c\u00f3 \u0111\u1ea7u nh\u00f4 th\u01b0\u1eddng \u0111o t\u1eeb \u0111\u1ea7u n\u00e0y \u0111\u1ebfn \u0111\u1ea7u kia. N\u1ebfu chi ti\u1ebft c\u00f3 vai, ghi ri\u00eang chi\u1ec1u d\u00e0i vai.<\/p>\n

    \"Th\u01b0\u1edbc
    V\u00edt ch\u00ecm \u0111\u1ea7u \u0111o to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i; v\u00edt \u0111\u1ea7u nh\u00f4 th\u01b0\u1eddng \u0111o t\u1eeb d\u01b0\u1edbi \u0111\u1ea7u v\u00edt.<\/figcaption><\/figure>\n

    4. Ki\u1ec3m tra chi ti\u1ebft l\u1eafp gh\u00e9p<\/h3>\n

    Th\u1eed v\u00edt m\u1eabu v\u00e0o \u0111ai \u1ed1c, l\u1ed7 ren ho\u1eb7c d\u01b0\u1ee1ng ren \u0111\u00e3 bi\u1ebft b\u1eb1ng tay. V\u00edt ph\u1ea3i b\u1eaft \u0111\u1ea7u tr\u01a1n tru v\u00e0 xoay m\u00e0 kh\u00f4ng b\u1ecb k\u1eb9t. Kh\u00f4ng \u00e9p v\u00edt \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 v\u1eeba. Ren b\u1ecb h\u1ecfng, sai b\u01b0\u1edbc, l\u1edbp ph\u1ee7 d\u00e0y ho\u1eb7c tr\u1ed9n l\u1eabn h\u1ec7 m\u00e9t\/inch c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng chi ti\u1ebft l\u1eafp gh\u00e9p v\u00e0 g\u00e2y ra k\u1ebft qu\u1ea3 \u0111o sai.<\/p>\n

    \"B\u00e0n
    D\u01b0\u1ee1ng \u0111o, th\u01b0\u1edbc c\u1eb7p v\u00e0 m\u1eabu chi ti\u1ebft l\u1eafp gh\u00e9p s\u1ebd x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c h\u01a1n so v\u1edbi ch\u1ec9 d\u00f9ng th\u01b0\u1edbc \u0111o.<\/figcaption><\/figure>\n

    Ki\u1ec3u \u0111\u1ea7u, ki\u1ec3u truy\u1ec1n \u0111\u1ed9ng v\u00e0 kho\u1ea3ng h\u1edf<\/h2>\n

    Hai v\u00edt c\u00f3 th\u1ec3 c\u00f9ng k\u00edch th\u01b0\u1edbc ren nh\u01b0ng y\u00eau c\u1ea7u \u0111\u1ea7u kh\u00e1c nhau. Ch\u1ecdn ki\u1ec3u \u0111\u1ea7u d\u1ef1a tr\u00ean b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn d\u1ee5ng c\u1ee5, khu v\u1ef1c k\u1eb9p v\u00e0 chi\u1ec1u cao ho\u00e0n thi\u1ec7n y\u00eau c\u1ea7u. R\u00e3nh truy\u1ec1n \u0111\u1ed9ng c\u0169ng ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi d\u1ee5ng c\u1ee5 l\u1eafp r\u00e1p v\u00e0 y\u00eau c\u1ea7u m\u00f4-men xo\u1eafn.<\/p>\n

    \n\n\n\n\n\n\n\n\n
    Ki\u1ec3u \u0111\u1ea7u<\/th>\nH\u1eefu \u00edch khi<\/th>\nKi\u1ec3m tra tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng<\/th>\n<\/tr>\n<\/thead>\n
    \u1ed0c \u0111\u1ea7u ch\u1ed1t<\/strong><\/td>\n\u0110\u1ea7u tr\u1ee5 nh\u1ecf g\u1ecdn v\u00e0 truy\u1ec1n \u0111\u1ed9ng l\u1ee5c gi\u00e1c trong ph\u00f9 h\u1ee3p v\u1edbi l\u1eafp r\u00e1p.<\/td>\n\u0110\u1ed9 s\u00e2u \u1ed5 c\u1eafm, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn c\u1edd l\u00ea, \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea7u v\u00e0 chi\u1ec1u cao k\u1eb9p.<\/td>\n<\/tr>\n
    L\u1ee5c gi\u00e1c ho\u1eb7c c\u00f3 v\u00e0nh<\/strong><\/td>\nC\u00f3 s\u1eb5n c\u1edd l\u00ea v\u00e0 b\u1ec1 m\u1eb7t t\u1ef3 c\u1ea7n di\u1ec7n t\u00edch l\u1edbn h\u01a1n.<\/td>\nK\u00edch th\u01b0\u1edbc \u0111\u1ed1i di\u1ec7n, \u0111\u01b0\u1eddng k\u00ednh v\u00e0nh, nhu c\u1ea7u v\u00f2ng \u0111\u1ec7m v\u00e0 kho\u1ea3ng h\u1edf quanh c\u1edd l\u00ea.<\/td>\n<\/tr>\n
    \u0110\u1ea7u tr\u00f2n ho\u1eb7c \u0111\u1ea7u n\u00fat<\/strong><\/td>\nB\u1ec1 m\u1eb7t tr\u00f2n th\u1ea5p \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn ph\u00eda tr\u00ean t\u1ea5m panel.<\/td>\n\u0110\u01b0\u1eddng k\u00ednh \u0111\u1ea7u, chi\u1ec1u cao, r\u00e3nh truy\u1ec1n \u0111\u1ed9ng v\u00e0 b\u1ec1 m\u1eb7t nh\u00ecn th\u1ea5y.<\/td>\n<\/tr>\n
    C\u1eaft l\u00fan<\/strong><\/td>\n\u0110\u1ea7u ph\u1ea3i n\u1eb1m ph\u1eb3ng ho\u1eb7c th\u1ea5p h\u01a1n b\u1ec1 m\u1eb7t xung quanh.<\/td>\nG\u00f3c v\u00e1t, \u0111\u01b0\u1eddng k\u00ednh ch\u1ed7 ng\u1ed3i, t\u1ed5ng chi\u1ec1u d\u00e0i v\u00e0 \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
    \"\u0110\u1ea7u
    H\u00ecnh d\u1ea1ng \u0111\u1ea7u thay \u0111\u1ed5i chi\u1ec1u cao b\u1ec1 m\u1eb7t, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn d\u1ee5ng c\u1ee5, di\u1ec7n t\u00edch t\u1ef3 v\u00e0 c\u00e1ch \u0111o chi\u1ec1u d\u00e0i ch\u00ednh x\u00e1c.<\/figcaption><\/figure>\n

    C\u1eb7p \u0111ai \u1ed1c, v\u00f2ng \u0111\u1ec7m v\u00e0 ren<\/h2>\n

    K\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p ch\u1ec9 h\u1eefu \u00edch khi c\u00e1c b\u1ed9 ph\u1eadn gh\u00e9p n\u1ed1i s\u1eed d\u1ee5ng c\u00f9ng h\u1ec7 th\u1ed1ng ren v\u00e0 b\u01b0\u1edbc ren. Gh\u00e9p v\u00edt M8 v\u1edbi \u0111ai \u1ed1c M8 s\u1eed d\u1ee5ng \u0111\u00fang b\u01b0\u1edbc ren; gh\u00e9p v\u00edt 1\/4-20 UNC v\u1edbi \u0111ai \u1ed1c 1\/4-20 UNC t\u01b0\u01a1ng th\u00edch. \u0110\u01b0\u1eddng k\u00ednh l\u1ed7 v\u00f2ng \u0111\u1ec7m, \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i, \u0111\u1ed9 d\u00e0y v\u00e0 ti\u00eau chu\u1ea9n v\u00f2ng \u0111\u1ec7m n\u00ean ph\u00f9 h\u1ee3p v\u1edbi l\u1ed7 v\u00e0 b\u1ec1 m\u1eb7t t\u1ef3.<\/p>\n