{"id":5733,"date":"2025-12-24T03:13:20","date_gmt":"2025-12-24T03:13:20","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5733"},"modified":"2025-12-24T03:13:20","modified_gmt":"2025-12-24T03:13:20","slug":"fastener-fundamentals-essential-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/fastener-fundamentals-essential-guide\/","title":{"rendered":"Nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 \u1ed1c v\u00edt: H\u01b0\u1edbng d\u1eabn thi\u1ebft y\u1ebfu"},"content":{"rendered":"<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">\u0110\u1ec1 c\u01b0\u01a1ng b\u00e0i vi\u1ebft<\/h2>\n<p style=\"margin-bottom: 15px;\">H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p t\u1ed5ng quan c\u00f3 c\u1ea5u tr\u00fac v\u1ec1 nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 \u1ed1c v\u00edt, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c k\u1ef9 s\u01b0 v\u00e0 chuy\u00ean gia \u0111ang t\u00ecm ki\u1ebfm ki\u1ebfn \u200b\u200bth\u1ee9c \u0111\u00e1ng tin c\u1eady:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Gi\u1edbi thi\u1ec7u: T\u1ea7m quan tr\u1ecdng v\u00e0 ph\u1ea1m vi \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt.<\/li>\n<li>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng: H\u1ec7 m\u00e9t v\u00e0 h\u1ec7 \u0111o l\u01b0\u1eddng Anh.<\/li>\n<li>Ren: C\u00e1c lo\u1ea1i, k\u00edch c\u1ee1 v\u00e0 k\u00fd hi\u1ec7u.<\/li>\n<li>Th\u00f4ng s\u1ed1 h\u00ecnh h\u1ecdc: K\u00edch th\u01b0\u1edbc ch\u00ednh c\u1ee7a ren c\u01a1 kh\u00ed.<\/li>\n<li>Ren t\u1ef1 ren v\u00e0 ren khoan: C\u00e1c th\u00f4ng s\u1ed1 c\u1ee5 th\u1ec3.<\/li>\n<li>G\u00f3c ren v\u00e0 \u0111u\u00f4i ren: G\u00f3c ren cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt kh\u00e1c nhau.<\/li>\n<li>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p: Gi\u1ea3i \u0111\u00e1p thi\u1ebft th\u1ef1c cho c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p.<\/li>\n<\/ul>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Gi\u1edbi thi\u1ec7u<\/h2>\n<p style=\"margin-bottom: 15px;\">C\u00e1c lo\u1ea1i \u1ed1c v\u00edt l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 n\u1ed1i c\u00e1c b\u1ed9 ph\u1eadn m\u1ed9t c\u00e1ch ch\u1eafc ch\u1eafn. H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1c kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n, bao g\u1ed3m h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng, ph\u00e2n lo\u1ea1i ren v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 h\u00ecnh h\u1ecdc, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p nh\u01b0 GB\/T v\u00e0 ISO. Hi\u1ec3u r\u00f5 nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n n\u00e0y gi\u00fap l\u1ef1a ch\u1ecdn \u1ed1c v\u00edt ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng, ng\u0103n ng\u1eeba h\u1ecfng h\u00f3c v\u00e0 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 ch\u1eafc ch\u1eafn cao.<\/p>\n<p style=\"margin-bottom: 15px;\">C\u00e1c chuy\u00ean gia n\u00ean \u01b0u ti\u00ean \u0111o \u0111\u1ea1c ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 kh\u00edt c\u1ee7a ren \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ed1i n\u1ed1i \u0111\u00e1ng tin c\u1eady. Ki\u1ebfn th\u1ee9c n\u00e0y r\u1ea5t quan tr\u1ecdng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 \u00f4 t\u00f4, x\u00e2y d\u1ef1ng v\u00e0 m\u00e1y m\u00f3c, n\u01a1i vi\u1ec7c si\u1ebft ch\u1eb7t kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 an to\u00e0n.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng<\/h2>\n<p style=\"margin-bottom: 15px;\">C\u00e1c ph\u00e9p \u0111o chi\u1ec1u d\u00e0i tr\u00ean to\u00e0n c\u1ea7u s\u1eed d\u1ee5ng hai h\u1ec7 th\u1ed1ng ch\u00ednh: h\u1ec7 m\u00e9t, ph\u1ed5 bi\u1ebfn \u1edf ch\u00e2u \u00c2u, ch\u00e2u \u00c1 bao g\u1ed3m Trung Qu\u1ed1c v\u00e0 Nh\u1eadt B\u1ea3n, v\u1edbi c\u00e1c \u0111\u01a1n v\u1ecb nh\u01b0 m\u00e9t (m), centimet (cm) v\u00e0 milim\u00e9t (mm); v\u00e0 h\u1ec7 \u0111o l\u01b0\u1eddng Anh, ph\u1ed5 bi\u1ebfn \u1edf M\u1ef9 v\u00e0 Anh, d\u1ef1a tr\u00ean inch.<\/p>\n<p style=\"margin-bottom: 15px;\">H\u01b0\u1edbng d\u1eabn chuy\u1ec3n \u0111\u1ed5i v\u00e0 \u1ee9ng d\u1ee5ng:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>H\u1ec7 m\u00e9t s\u1eed d\u1ee5ng h\u1ec7 c\u01a1 s\u1ed1 10: 1 m = 100 cm = 1000 mm.<\/li>\n<li>H\u1ec7 \u0111o l\u01b0\u1eddng Anh s\u1eed d\u1ee5ng c\u01a1 s\u1ed1 8: 1 inch = 8 v\u1ea1ch chia, 1 inch = 25,4 mm (v\u00ed d\u1ee5: 3\/8 inch \u00d7 25,4 = 9,52 mm).<\/li>\n<li>\u0110\u1ed1i v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n 1\/4 inch, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c s\u1ed1 \u0111o nh\u01b0 4#, 5#, 6#, 7#, 8#, 10#, 12# \u0111\u1ec3 bi\u1ec3u th\u1ecb \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a.<\/li>\n<li>Ch\u1ecdn h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n khu v\u1ef1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch trong c\u00e1c d\u1ef1 \u00e1n qu\u1ed1c t\u1ebf.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">C\u00e1c s\u1ee3i ch\u1ec9<\/h2>\n<p style=\"margin-bottom: 15px;\">Ren l\u00e0 nh\u1eefng \u0111\u01b0\u1eddng xo\u1eafn \u1ed1c \u0111\u1ed3ng nh\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t h\u00ecnh tr\u1ee5, \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo c\u1ea5u tr\u00fac v\u00e0 c\u00f4ng d\u1ee5ng th\u00e0nh ba lo\u1ea1i ch\u00ednh: ren \u0111a d\u1ee5ng d\u00f9ng \u0111\u1ec3 bu\u1ed9c ch\u1eb7t, ren truy\u1ec1n \u0111\u1ed9ng d\u00f9ng \u0111\u1ec3 truy\u1ec1n chuy\u1ec3n \u0111\u1ed9ng v\u00e0 ren l\u00e0m k\u00edn d\u00f9ng \u0111\u1ec3 t\u1ea1o c\u00e1c m\u1ed1i n\u1ed1i kh\u00f4ng b\u1ecb r\u00f2 r\u1ec9.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px; margin-bottom: 10px;\">C\u00e1c lo\u1ea1i ren<\/h3>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>Ren th\u00f4ng d\u1ee5ng: Ren h\u00ecnh tam gi\u00e1c, chia th\u00e0nh ren th\u00f4 v\u00e0 ren m\u1ecbn; ren m\u1ecbn c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n.<\/li>\n<li>Ren h\u1ed9p s\u1ed1: H\u00ecnh thang, h\u00ecnh ch\u1eef nh\u1eadt, h\u00ecnh r\u0103ng c\u01b0a ho\u1eb7c h\u00ecnh tam gi\u00e1c.<\/li>\n<li>Ren l\u00e0m k\u00edn: Ren \u1ed1ng, ren c\u00f4n, ho\u1eb7c ren \u1ed1ng c\u00f4n.<\/li>\n<\/ul>\n<h3 style=\"font-size: 1.2em; margin-top: 20px; margin-bottom: 10px;\">Ren v\u1eeba v\u1eb7n<\/h3>\n<p style=\"margin-bottom: 15px;\">\u0110\u1ed9 \u0103n kh\u1edbp ren quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 ch\u1eb7t gi\u1eefa c\u00e1c ren gh\u00e9p n\u1ed1i, \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1c sai l\u1ec7ch v\u00e0 dung sai.<\/p>\n<p style=\"margin-bottom: 15px;\">\u0110\u1ed1i v\u1edbi ren h\u1ec7 inch th\u1ed1ng nh\u1ea5t:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>B\u00ean ngo\u00e0i: 1A, 2A, 3A (c\u00e0ng ch\u1eb7t th\u00ec s\u1ed1 c\u00e0ng cao).<\/li>\n<li>N\u1ed9i b\u1ed9: 1B, 2B, 3B.<\/li>\n<li>T\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 c\u00e1c kh\u1edbp n\u1ed1i c\u00f3 \u0111\u1ed9 h\u1edf; c\u00e1c lo\u1ea1i cao c\u1ea5p h\u01a1n c\u00f3 dung sai nh\u1ecf h\u01a1n.<\/li>\n<li>1A\/1B d\u00e0nh cho c\u00e1c chi ti\u1ebft l\u1eafp r\u00e1p l\u1ecfng l\u1ebbo; 2A\/2B d\u00e0nh cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng; 3A\/3B d\u00e0nh cho c\u00e1c thi\u1ebft k\u1ebf \u0111\u00f2i h\u1ecfi \u0111\u1ed9 an to\u00e0n cao.<\/li>\n<\/ul>\n<p style=\"margin-bottom: 15px;\">\u0110\u1ed1i v\u1edbi ren h\u1ec7 m\u00e9t:<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>D\u00f9ng ngo\u00e0i: 4 gi\u1edd, 6 gi\u1edd, 6g.<\/li>\n<li>B\u00ean trong: 5H, 6H, 7H.<\/li>\n<li>Thang \u0111i\u1ec3m Nh\u1eadt B\u1ea3n: I, II, III (th\u01b0\u1eddng l\u00e0 II).<\/li>\n<li>Ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi: 6H\/6g cho c\u00e1c lo\u1ea1i \u1ed1c v\u00edt tinh t\u1ebf.<\/li>\n<\/ul>\n<h3 style=\"font-size: 1.2em; margin-top: 20px; margin-bottom: 10px;\">D\u1ea5u hi\u1ec7u ren<\/h3>\n<p style=\"margin-bottom: 15px;\">C\u00e1c k\u00fd hi\u1ec7u ch\u1ec9 r\u00f5 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a ren, \u0111\u1ea3m b\u1ea3o nh\u1eadn d\u1ea1ng v\u00e0 s\u1eed d\u1ee5ng ch\u00ednh x\u00e1c.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Th\u00f4ng s\u1ed1 h\u00ecnh h\u1ecdc<\/h2>\n<p style=\"margin-bottom: 15px;\">C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a ren trong c\u00e1c \u1ee9ng d\u1ee5ng c\u01a1 kh\u00ed.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>\u0110\u01b0\u1eddng k\u00ednh l\u1edbn (D, d): H\u00ecnh tr\u1ee5 t\u01b0\u1edfng t\u01b0\u1ee3ng t\u1ea1i \u0111\u1ec9nh ho\u1eb7c ch\u00e2n r\u0103ng.<\/li>\n<li>\u0110\u01b0\u1eddng k\u00ednh b\u01b0\u1edbc (D2, d2): \u0110\u01b0\u1ee3c t\u00ednh b\u1eb1ng D(d) \u2013 2 \u00d7 (3H\/8), trong \u0111\u00f3 H l\u00e0 chi\u1ec1u cao tam gi\u00e1c ban \u0111\u1ea7u (0,866P cho 60\u00b0; 0,960P cho 55\u00b0).<\/li>\n<li>\u0110\u01b0\u1eddng k\u00ednh nh\u1ecf (D1, d1): H\u00ecnh tr\u1ee5 t\u01b0\u1edfng t\u01b0\u1ee3ng t\u1ea1i ch\u00e2n r\u0103ng ho\u1eb7c \u0111\u1ec9nh r\u0103ng.<\/li>\n<li>B\u01b0\u1edbc ren (P): Kho\u1ea3ng c\u00e1ch tr\u1ee5c gi\u1eefa c\u00e1c ren li\u1ec1n k\u1ec1; h\u1ec7 \u0111o l\u01b0\u1eddng Anh s\u1eed d\u1ee5ng s\u1ed1 ren tr\u00ean m\u1ed7i inch.<\/li>\n<li>G\u00f3c s\u01b0\u1eddn (\u03b1\/2): M\u1ed9t n\u1eeda g\u00f3c ren (30\u00b0 cho bi\u00ean d\u1ea1ng 60\u00b0; 27,5\u00b0 cho bi\u00ean d\u1ea1ng 55\u00b0).<\/li>\n<li>Chi\u1ec1u d\u00e0i \u0103n kh\u1edbp: \u0110\u1ed9 ch\u1ed3ng ch\u00e9o theo tr\u1ee5c c\u1ee7a c\u00e1c ren \u0111\u00e3 \u0103n kh\u1edbp.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">B\u01b0\u1edbc ren v\u00e0 s\u1ed1 ren tr\u00ean m\u1ed7i inch<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt h\u1ec7 m\u00e9t<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"3\">B\u01b0\u1edbc ren (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a \u0110\u1ebf qu\u1ed1c<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">\u0110\u01b0\u1eddng k\u00ednh danh ngh\u0129a (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"3\">S\u1ed1 s\u1ee3i tr\u00ean m\u1ed7i inch<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Kh\u1ecfe<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Si\u00eau m\u1ecbn<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Kh\u1ecfe<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Whitworth<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">48<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">28<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">28<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5\/16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7.94<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3\/8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9.53<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7\/16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11.11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">13<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9\/16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14.29<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5\/8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">15.86<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">19.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7\/8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">22.23<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M27<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">25.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">Ren t\u1ef1 ren v\u00e0 ren khoan<\/h2>\n<p style=\"margin-bottom: 15px;\">Ren t\u1ef1 t\u1ea1o v\u00e0 ren khoan t\u1ea1o ra c\u00e1c l\u1ed7 ri\u00eang, v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>\u0110\u01b0\u1eddng k\u00ednh l\u1edbn (d1): H\u00ecnh tr\u1ee5 t\u01b0\u1edfng t\u01b0\u1ee3ng t\u1ea1i \u0111\u1ec9nh.<\/li>\n<li>\u0110\u01b0\u1eddng k\u00ednh nh\u1ecf (d2): H\u00ecnh tr\u1ee5 t\u01b0\u1edfng t\u01b0\u1ee3ng t\u1ea1i ch\u00e2n c\u00e2y.<\/li>\n<li>B\u01b0\u1edbc ren (p): Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ren ho\u1eb7c s\u1ed1 ren tr\u00ean m\u1ed7i inch.<\/li>\n<\/ul>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">B\u01b0\u1edbc ren t\u1ef1 ren h\u1ec7 m\u00e9t (mm)<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST1.5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST1.9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST2.2<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST2.6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST2.9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST3.3<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST3.5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST3.9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST4.2<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST4.8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST5.5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST6.3<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST8.0<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">ST9.5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">S\u00e2n b\u00f3ng \u0111\u00e1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">S\u1ed1 ren t\u1ef1 ren h\u1ec7 inch (Imperial self-tapping threads per Inch)<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12#<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14#<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Lo\u1ea1i AB<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">19<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">14<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Lo\u1ea1i A<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">Ren v\u00edt th\u1ea1ch cao Nh\u1eadt B\u1ea3n<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Th\u00f4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Kh\u1ecfe<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">C\u00e1c s\u1ee3i ch\u1ec9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">B\u01b0\u1edbc ren (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">C\u00e1c s\u1ee3i ch\u1ec9<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">B\u01b0\u1edbc ren (mm)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.82<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.41<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.82<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.59<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.82<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.69<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.11<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<h3 style=\"text-align: center; font-size: 1.2em; margin-bottom: 10px;\">B\u01b0\u1edbc ren\/R\u00f2ng v\u00edt m\u00e1y<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt h\u1ec7 m\u00e9t<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">B\u01b0\u1edbc ren (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a \u0110\u1ebf qu\u1ed1c<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">S\u1ed1 s\u1ee3i tr\u00ean m\u1ed7i inch<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Kh\u1ecfe<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Th\u00f4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Kh\u1ecfe<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">48<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">44<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">32<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12#<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">28<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">28<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 15px;\">\u0110\u1ed1i v\u1edbi vi\u1ec7c khoan v\u00edt, b\u01b0\u1edbc ren CSD (m\u00e1y) v\u00e0 BSD (lo\u1ea1i AB) l\u1ea7n l\u01b0\u1ee3t tham chi\u1ebfu \u0111\u1ebfn b\u1ea3ng ren m\u00e1y v\u00e0 b\u1ea3ng ren t\u1ef1 ren.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">G\u00f3c ren v\u00e0 \u0111u\u00f4i ren<\/h2>\n<p style=\"margin-bottom: 15px;\">G\u00f3c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 c\u1eaft v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt chuy\u00ean d\u1ee5ng.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 20px;\">\n<li>T\u1ef1 g\u00f5: S\u01b0\u1eddn 60\u00b0, \u0111u\u00f4i 45\u00b0 \u00b15\u00b0.<\/li>\n<li>V\u00e1ch th\u1ea1ch cao: G\u00f3c s\u01b0\u1eddn 60\u00b0 (ho\u1eb7c t\u00f9y ch\u1ec9nh 45\u00b0 \u00b15\u00b0), g\u00f3c \u0111u\u00f4i 25\u00b0 \u00b13\u00b0.<\/li>\n<li>V\u00e1n \u00e9p: C\u1ea1nh b\u00ean 40\u00b0 \u00b13\u00b0, \u0111u\u00f4i 25\u00b0 \u00b13\u00b0 ho\u1eb7c 34\u00b0 \u00b13\u00b0 (t\u00f9y ch\u1ec9nh).<\/li>\n<li>Khoan: G\u00f3c s\u01b0\u1eddn 60\u00b0 \u00b15\u00b0, g\u00f3c \u0111u\u00f4i thay \u0111\u1ed5i t\u00f9y theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 khu\u00f4n.<\/li>\n<\/ul>\n<p style=\"margin-bottom: 15px;\">Ch\u1ecdn g\u00f3c \u0111\u1ed9 ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean ch\u1ea5t li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 xuy\u00ean th\u1ea5u v\u00e0 \u0111\u1ed9 b\u00e1m d\u00ednh t\u1ed1i \u01b0u.<\/p>\n<\/div>\n<div style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 1.5em; border-bottom: 2px solid #ddd; padding-bottom: 10px;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<ol style=\"list-style-type: decimal; padding-left: 20px; margin-bottom: 20px;\">\n<li style=\"margin-bottom: 15px;\"><strong>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u1ec9 th\u00f4 v\u00e0 ch\u1ec9 m\u1ecbn l\u00e0 g\u00ec?<\/strong><br \/>\nRen th\u00f4 c\u00f3 b\u01b0\u1edbc ren l\u1edbn h\u01a1n gi\u00fap l\u1eafp r\u00e1p nhanh h\u01a1n v\u00e0 ch\u1ed1ng tr\u01b0\u1ee3t t\u1ed1t h\u01a1n; ren m\u1ecbn mang l\u1ea1i \u0111\u1ed9 b\u1ec1n cao h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng rung t\u1ed1t h\u01a1n trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa h\u1ec7 \u0111o l\u01b0\u1eddng m\u00e9t v\u00e0 h\u1ec7 \u0111o l\u01b0\u1eddng Anh?<\/strong><br \/>\nS\u1eed d\u1ee5ng quy \u0111\u1ed5i 1 inch = 25,4 mm; v\u00ed d\u1ee5, nh\u00e2n c\u00e1c ph\u00e2n s\u1ed1 theo h\u1ec7 \u0111o l\u01b0\u1eddng Anh v\u1edbi 25,4 \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng t\u00ednh b\u1eb1ng mm, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c trong c\u00e1c thi\u1ebft k\u1ebf s\u1eed d\u1ee5ng h\u1ec7 \u0111o l\u01b0\u1eddng h\u1ed7n h\u1ee3p.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng ren t\u1ef1 ren v\u00e0 ren m\u00e1y?<\/strong><br \/>\nM\u0169i khoan t\u1ef1 ren d\u00f9ng \u0111\u1ec3 t\u1ea1o l\u1ed7 tr\u00ean c\u00e1c v\u1eadt li\u1ec7u m\u1ec1m nh\u01b0 g\u1ed7 ho\u1eb7c nh\u1ef1a; m\u00e1y t\u1ea1o l\u1ed7 ren s\u1eb5n \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>Ch\u1ec9 s\u1ed1 \u0111\u1ed9 kh\u00edt ren bi\u1ec3u th\u1ecb \u0111i\u1ec1u g\u00ec?<\/strong><br \/>\nC\u00e1c c\u1ea5p \u0111\u1ed9 cao h\u01a1n (v\u00ed d\u1ee5: 3A\/3B) c\u00f3 ngh\u0129a l\u00e0 dung sai ch\u1eb7t ch\u1ebd h\u01a1n cho c\u00e1c m\u1ed1i l\u1eafp gh\u00e9p quan tr\u1ecdng; c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n (1A\/1B) d\u00e0nh cho c\u00e1c c\u1ee5m l\u1eafp r\u00e1p l\u1ecfng l\u1ebbo, ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>L\u1edbp m\u1ea1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn dung sai ren nh\u01b0 th\u1ebf n\u00e0o?<\/strong><br \/>\nL\u1edbp m\u1ea1 l\u00e0m t\u0103ng \u0111\u1ed9 d\u00e0y; h\u00e3y s\u1eed d\u1ee5ng dung sai tr\u01b0\u1edbc khi m\u1ea1, v\u00ed d\u1ee5 nh\u01b0 6g cho y\u00eau c\u1ea7u 6h, \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c l\u1edbp d\u00e0y 6-9 \u03bcm m\u00e0 kh\u00f4ng g\u00e2y nhi\u1ec5u.<\/li>\n<li style=\"margin-bottom: 15px;\"><strong>T\u1ea1i sao b\u01b0\u1edbc ren l\u1ea1i quan tr\u1ecdng trong vi\u1ec7c l\u1ef1a ch\u1ecdn \u1ed1c v\u00edt?<\/strong><br \/>\nB\u01b0\u1edbc ren \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c v\u00e0 t\u1ed1c \u0111\u1ed9 k\u1ebft n\u1ed1i; b\u01b0\u1edbc ren nh\u1ecf h\u01a1n l\u00e0m t\u0103ng l\u1ef1c gi\u1eef nh\u01b0ng c\u1ea7n nhi\u1ec1u v\u00f2ng xoay h\u01a1n \u0111\u1ec3 l\u1eafp \u0111\u1eb7t.<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Article Outline This guide provides a structured overview of fastener basics, optimized for engineers and professionals seeking reliable knowledge: Introduction: Importance and scope of fasteners. Measurement Units: Metric and imperial systems. Threads: Types, fits, and markings. Geometric Parameters: Key dimensions for mechanical threads. Self-Tapping and Drilling Threads: Specific parameters. Thread Angles and Tails: Angles for [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5733","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/comments?post=5733"}],"version-history":[{"count":1,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5733\/revisions"}],"predecessor-version":[{"id":5734,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5733\/revisions\/5734"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5733"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}