{"id":6970,"date":"2025-12-11T12:04:39","date_gmt":"2025-12-11T04:04:39","guid":{"rendered":"https:\/\/xzfastener.com\/?p=6970"},"modified":"2026-06-23T12:05:38","modified_gmt":"2026-06-23T04:05:38","slug":"metric-bolt-strength-vs-sae-bolt-strength-buyers-comparison-guide","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/metric-bolt-strength-vs-sae-bolt-strength-buyers-comparison-guide\/","title":{"rendered":"\u0110\u1ed9 b\u1ec1n bu l\u00f4ng theo h\u1ec7 m\u00e9t so v\u1edbi \u0111\u1ed9 b\u1ec1n bu l\u00f4ng: H\u01b0\u1edbng d\u1eabn so s\u00e1nh c\u1ee7a ng\u01b0\u1eddi mua (SAE)"},"content":{"rendered":"<p>Ng\u01b0\u1eddi mua th\u01b0\u1eddng h\u1ecfi li\u1ec7u bu l\u00f4ng h\u1ec7 m\u00e9t c\u00f3 gi\u1ed1ng v\u1edbi bu l\u00f4ng c\u1ea5p 8 hay kh\u00f4ng. C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn: kh\u00f4ng. C\u00e1c con s\u1ed1 tr\u00f4ng gi\u1ed1ng nhau nh\u01b0ng ch\u00fang thu\u1ed9c v\u1ec1 c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i kh\u00e1c nhau, c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c nhau v\u00e0 c\u00e1c h\u1ecd lu\u1ed3ng kh\u00e1c nhau. (SAE, 8.8)<\/p>\n\n\n\n<p>Sai l\u1ea7m n\u00e0y th\u01b0\u1eddng xuy\u00ean xu\u1ea5t hi\u1ec7n trong c\u00e1c c\u00f4ng vi\u1ec7c b\u1ea3o tr\u00ec, s\u1eeda ch\u1eefa m\u00e1y m\u00f3c, thi\u1ebft b\u1ecb x\u00e2y d\u1ef1ng, \u0111\u01a1n h\u00e0ng xu\u1ea5t kh\u1ea9u. M\u1ed9t s\u1ef1 thay th\u1ebf sai c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng l\u1eafp ren k\u00e9m, t\u1ea3i tr\u01b0\u1edbc sai ho\u1eb7c t\u1eeb ch\u1ed1i ki\u1ec3m tra.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">S\u01a1 l\u01b0\u1ee3c v\u1ec1 s\u1ed1 li\u1ec7u so v\u1edbi SAE \u0110\u1ed9 b\u1ec1n c\u1ee7a bu l\u00f4ng<\/h2>\n\n\n\n<p>\u0110\u1ed9 b\u1ec1n h\u1ec7 m\u00e9t c\u1ee7a bu l\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00e1c lo\u1ea1i thu\u1ed9c t\u00ednh, ch\u1eb3ng h\u1ea1n nh\u01b0 8.8, 10.9, v\u00e0 12.9. SAE bu l\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo SAE J429 c\u1ea5p, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea5p 2, c\u1ea5p 5, v\u00e0 c\u1ea5p 8. (ISO)<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>H\u1ec7 th\u1ed1ng<\/th><th>L\u1edbp chung<\/th><th>X\u1ea5p x\u1ec9. \u0110\u1ed9 b\u1ec1n k\u00e9o<\/th><th>S\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th><\/tr><\/thead><tbody><tr><td>S\u1ed1 li\u1ec7u<\/td><td>8.8<\/td><td>800 MPa \/ 116 ksi<\/td><td>M\u00e1y m\u00f3c c\u01b0\u1eddng \u0111\u1ed9 cao n\u00f3i chung<\/td><\/tr><tr><td>S\u1ed1 li\u1ec7u<\/td><td>10.9<\/td><td>1,000 MPa \/ 145 ksi<\/td><td>Thi\u1ebft b\u1ecb n\u1eb7ng, kh\u1edbp ch\u1ecbu t\u1ea3i<\/td><\/tr><tr><td>S\u1ed1 li\u1ec7u<\/td><td>12.9<\/td><td>1,200 MPa \/ 174 ksi<\/td><td>C\u1ee5m ch\u1ecbu t\u1ea3i cao nh\u1ecf g\u1ecdn<\/td><\/tr><tr><td>SAE<\/td><td>C\u1ea5p 5<\/td><td>120 ksi \/ 827 MPa<\/td><td>\u00d4 t\u00f4, m\u00e1y m\u00f3c, s\u1eeda ch\u1eefa<\/td><\/tr><tr><td>SAE<\/td><td>C\u1ea5p 8<\/td><td>150 ksi \/ 1,034 MPa<\/td><td>Ch\u1ed1t inch c\u01b0\u1eddng \u0111\u1ed9 cao<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>V\u00ec v\u1eady, SAE C\u1ea5p 8 g\u1ea7n v\u1edbi s\u1ed1 li\u1ec7u 10.9 h\u01a1n s\u1ed1 li\u1ec7u 8.8. \u0110\u00f3 l\u00e0 \u0111i\u1ec3m m\u00e0 nhi\u1ec1u nh\u00f3m mua h\u00e0ng b\u1ecf l\u1ee1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch x\u00e1c \u0111\u1ecbnh l\u1edbp<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra ph\u1ea7n \u0111\u00e1nh d\u1ea5u \u0111\u1ea7u tr\u01b0\u1edbc<\/h3>\n\n\n\n<p>Bu l\u00f4ng h\u1ec7 m\u00e9t th\u01b0\u1eddng hi\u1ec3n th\u1ecb lo\u1ea1i thu\u1ed9c t\u00ednh tr\u00ean \u0111\u1ea7u: 8.8, 10.9, ho\u1eb7c 12.9. SAE bu l\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng xuy\u00ean t\u00e2m.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Lo\u1ea1i bu l\u00f4ng<\/th><th>\u0110\u00e1nh d\u1ea5u \u0111\u1ea7u<\/th><\/tr><\/thead><tbody><tr><td>S\u1ed1 li\u1ec7u 8.8<\/td><td>\u0111\u00f3ng d\u1ea5u \u201c8.8\u201d<\/td><\/tr><tr><td>S\u1ed1 li\u1ec7u 10.9<\/td><td>\u0111\u00f3ng d\u1ea5u \u201c10.9\u201d<\/td><\/tr><tr><td>S\u1ed1 li\u1ec7u 12.9<\/td><td>\u0111\u00f3ng d\u1ea5u \u201c12.9\u201d<\/td><\/tr><tr><td>SAE C\u1ea5p 5<\/td><td>Ba \u0111\u01b0\u1eddng xuy\u00ean t\u00e2m<\/td><\/tr><tr><td>SAE C\u1ea5p 8<\/td><td>S\u00e1u \u0111\u01b0\u1eddng xuy\u00ean t\u00e2m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ec3 t\u00ecm ngu\u1ed3n cung \u1ee9ng s\u1ea3n ph\u1ea9m theo s\u1ed1 li\u1ec7u, h\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi <a href=\"https:\/\/xzfastener.com\/vi\/fastener-type\/bolts\/\">danh m\u1ee5c s\u1ea3n ph\u1ea9m bu l\u00f4ng<\/a> v\u00e0 x\u00e1c nh\u1eadn \u0111i\u1ec3m tr\u01b0\u1edbc khi b\u00e1o gi\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao ng\u01b0\u1eddi mua kh\u00f4ng n\u00ean trao \u0111\u1ed5i ch\u00fang m\u1ed9t c\u00e1ch t\u1ef1 do<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ee9c m\u1ea1nh ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a tr\u1eadn \u0111\u1ea5u<\/h3>\n\n\n\n<p>M\u1ed9t bu l\u00f4ng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ecdn ch\u1ec9 b\u1eb1ng \u0111\u1ed9 b\u1ec1n k\u00e9o. B\u01b0\u1edbc ren, c\u1ea5p \u0111ai \u1ed1c, \u0111\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng \u0111\u1ec7m, l\u1edbp ph\u1ee7, gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn v\u00e0 ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc \u0111\u1ec1u quan tr\u1ecdng.<\/p>\n\n\n\n<p>M\u1ed9t bu l\u00f4ng h\u1ec7 m\u00e9t s\u1ebd kh\u00f4ng th\u1ec3 thay th\u1ebf m\u1ed9t bu l\u00f4ng 1\/2&#8243;-13 UNC. Ngay c\u1ea3 khi \u0111\u01b0\u1eddng k\u00ednh tr\u00f4ng g\u1ea7n nhau th\u00ec d\u1ea1ng ren v\u1eabn kh\u00e1c. (M12)<\/p>\n\n\n\n<p>Tr\u01b0\u1edbc khi thay th\u1ebf h\u1ec7 th\u1ed1ng n\u00e0y b\u1eb1ng h\u1ec7 th\u1ed1ng kh\u00e1c, h\u00e3y x\u00e1c nh\u1eadn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u01b0\u1eddng k\u00ednh v\u00e0 b\u01b0\u1edbc ren<\/li>\n\n\n\n<li>Chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u d\u00e0i tay c\u1ea7m<\/li>\n\n\n\n<li>C\u1ea5p \u0111\u1ed9 s\u1ee9c m\u1ea1nh ho\u1eb7c lo\u1ea1i thu\u1ed9c t\u00ednh<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111ai \u1ed1c v\u00e0 v\u00f2ng \u0111\u1ec7m<\/li>\n\n\n\n<li>M\u00f4i tr\u01b0\u1eddng ph\u1ee7 v\u00e0 \u0103n m\u00f2n<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u m\u00f4-men xo\u1eafn ho\u1eb7c t\u1ea3i tr\u01b0\u1edbc<\/li>\n\n\n\n<li>Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng ISO, DIN, SAE, ASTM, ho\u1eb7c ASME<\/li>\n<\/ul>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea3i cao h\u01a1n, c\u00f3 s\u1eb5n \u0111\u00e1nh gi\u00e1 <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/high-strength-fasteners\/\">\u1ed1c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao<\/a> thay v\u00ec gi\u1ea3 \u0111\u1ecbnh chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec3m tr\u1ef1c ti\u1ebfp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1eddi khuy\u00ean mua h\u00e0ng th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n to\u00e0n c\u1ea7u, h\u00e3y ghi \u0111\u1ea7y \u0111\u1ee7 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0o \u0111\u01a1n \u0111\u1eb7t h\u00e0ng. \u0110\u1eebng ch\u1ec9 vi\u1ebft \u201cC\u1ea5p 8.\u201d \u1ede B\u1eafc M\u1ef9, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 c\u00f3 ngh\u0129a l\u00e0 SAE C\u1ea5p 8. Trong chu\u1ed7i cung \u1ee9ng s\u1ed1 li\u1ec7u, ai \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u1ecdc n\u00f3 l\u00e0 8.8.<\/p>\n\n\n\n<p>M\u1ed9t d\u00f2ng r\u00f5 r\u00e0ng s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt k\u00e9m<\/th><th>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt t\u1ed1t h\u01a1n<\/th><\/tr><\/thead><tbody><tr><td>bu l\u00f4ng c\u1ea5p 8<\/td><td>1\/2&#8243;-13 UNC x 2&#8243;, SAE J429 C\u1ea5p 8, m\u1ea1 k\u1ebdm<\/td><\/tr><tr><td>10.9 bu l\u00f4ng<\/td><td>M12 x 50, ISO 4017, L\u1edbp 10.9, oxit \u0111en<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>C\u00e1c t\u00f9y ch\u1ecdn th\u00e9p carbon v\u00e0 th\u00e9p h\u1ee3p kim th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u1ea3 hai h\u1ec7 th\u1ed1ng. Ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 so s\u00e1nh c\u00e1c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 ho\u00e0n thi\u1ec7n theo <a href=\"https:\/\/xzfastener.com\/vi\/fastener-material\/carbon-steel\/\">\u1ed1c v\u00edt th\u00e9p carbon<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u00e0i h\u1ecdc cu\u1ed1i c\u00f9ng<\/h2>\n\n\n\n<p>\u0110\u1ed9 b\u1ec1n bu-l\u00f4ng theo h\u1ec7 m\u00e9t v\u00e0 \u0111\u1ed9 b\u1ec1n bu-l\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c so s\u00e1nh, nh\u01b0ng ch\u00fang kh\u00f4ng n\u00ean thay th\u1ebf cho nhau m\u1ed9t c\u00e1ch t\u00f9y ti\u1ec7n. Kh\u1edbp c\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n, ren, c\u1ea5p, l\u1edbp ph\u1ee7 v\u00e0 giao ph\u1ed1i. Vi\u1ec7c ki\u1ec3m tra b\u1ed5 sung nh\u1ecf \u0111\u00f3 gi\u00fap ti\u1ebft ki\u1ec7m r\u1ea5t nhi\u1ec1u r\u1eafc r\u1ed1i t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. (SAE)<\/p>","protected":false},"excerpt":{"rendered":"<p>Buyers often ask whether a metric 8.8 bolt is the same as an SAE Grade 8 bolt. The short answer: no. The numbers look similar, but they belong to different grading systems, different standards, and different thread families. This mistake shows up often in maintenance, machinery repair, construction equipment, and export orders. One wrong substitution [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[479],"tags":[489],"class_list":["post-6970","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-load-capacity-tensile-shear-strength"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=6970"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6970\/revisions"}],"predecessor-version":[{"id":6971,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6970\/revisions\/6971"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=6970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=6970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=6970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}