{"id":5604,"date":"2025-12-23T00:58:04","date_gmt":"2025-12-23T00:58:04","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5604"},"modified":"2025-12-23T01:18:24","modified_gmt":"2025-12-23T01:18:24","slug":"iso-4762-2004-hexagon-socket-head-cap-screws-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/iso-4762-2004-hexagon-socket-head-cap-screws-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 v\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c ch\u00ecm theo ti\u00eau chu\u1ea9n ISO 4762-2004"},"content":{"rendered":"
\n
\n

Gi\u1edbi thi\u1ec7u<\/h2>\n

Ti\u00eau chu\u1ea9n ISO 4762-2004 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c c\u00f3 ren b\u01b0\u1edbc l\u1edbn, t\u1eeb M1.6 \u0111\u1ebfn M64, v\u00e0 c\u1ea5p s\u1ea3n ph\u1ea9m A. Ti\u00eau chu\u1ea9n n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft trong k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady khi si\u1ebft ch\u1eb7t trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1eafp r\u00e1p m\u00e1y m\u00f3c, linh ki\u1ec7n \u00f4 t\u00f4 v\u00e0 c\u1ea5u tr\u00fac h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. N\u00f3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c, c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 dung sai \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng thay th\u1ebf v\u00e0 hi\u1ec7u su\u1ea5t khi ch\u1ecbu t\u1ea3i.<\/p>\n

T\u1ea7m quan tr\u1ecdng c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y n\u1eb1m \u1edf vai tr\u00f2 c\u1ee7a n\u00f3 trong vi\u1ec7c chu\u1ea9n h\u00f3a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt tr\u00ean to\u00e0n c\u1ea7u, gi\u1ea3m thi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t trong s\u1ea3n xu\u1ea5t v\u00e0 n\u00e2ng cao an to\u00e0n trong thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 ISO 4762-2004, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t \u1ed1c v\u00edt ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t k\u00e9o cao, v\u1edbi c\u1ea5p \u0111\u1ed9 b\u1ec1n l\u00ean \u0111\u1ebfn 12,9 \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i th\u00e9p. \u0110i\u1ec1u n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho th\u01b0\u01a1ng m\u1ea1i qu\u1ed1c t\u1ebf v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n trong c\u00e1c quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

Trong gia c\u00f4ng kim lo\u1ea1i v\u00e0 d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p, c\u00e1c lo\u1ea1i v\u00edt n\u00e0y \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng nh\u1edd thi\u1ebft k\u1ebf \u0111\u1ea7u l\u1ee5c gi\u00e1c l\u00f5m, cho ph\u00e9p si\u1ebft ch\u1eb7t v\u1edbi m\u00f4-men xo\u1eafn cao m\u00e0 kh\u00f4ng c\u00f3 c\u00e1c ph\u1ea7n nh\u00f4 ra b\u00ean ngo\u00e0i, l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng h\u1ea1n ch\u1ebf kh\u00f4ng gian. Ti\u00eau chu\u1ea9n n\u00e0y bao g\u1ed3m c\u00e1c kh\u00eda c\u1ea1nh nh\u01b0 dung sai ren, \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c t\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u, bao g\u1ed3m th\u00e9p, th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 kim lo\u1ea1i m\u00e0u.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p ph\u00e2n t\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n, d\u1ef1a tr\u00ean c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh th\u1ee9c \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c k\u1ef9 s\u01b0 l\u1ef1a ch\u1ecdn c\u00e1c lo\u1ea1i \u1ed1c v\u00edt ph\u00f9 h\u1ee3p. N\u00f3 bao g\u1ed3m c\u00e1c b\u1ea3ng k\u00edch th\u01b0\u1edbc, \u0111i\u1ec1u ki\u1ec7n k\u1ef9 thu\u1eadt v\u00e0 nh\u1eefng hi\u1ec3u bi\u1ebft th\u1ef1c ti\u1ec5n \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t trong giai \u0111o\u1ea1n mua s\u1eafm v\u00e0 thi\u1ebft k\u1ebf. Hi\u1ec3u r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u, tu\u1ed5i th\u1ecd cao v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh c\u1ee7a ng\u00e0nh.<\/p>\n

H\u01a1n n\u1eefa, ti\u00eau chu\u1ea9n n\u00e0y tham chi\u1ebfu c\u00e1c t\u00e0i li\u1ec7u ISO kh\u00e1c v\u1ec1 ren, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 dung sai, t\u1ea1o ra m\u1ed9t khu\u00f4n kh\u1ed5 to\u00e0n di\u1ec7n cho s\u1ea3n xu\u1ea5t \u1ed1c v\u00edt. V\u00ed d\u1ee5, n\u00f3 quy \u0111\u1ecbnh r\u1eb1ng \u0111\u1ed1i v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n M39, c\u00f3 th\u1ec3 c\u1ea7n c\u00f3 th\u1ecfa thu\u1eadn v\u1ec1 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh nh\u1ea5t \u0111\u1ecbnh, l\u00e0m n\u1ed5i b\u1eadt t\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u00f9y ch\u1ec9nh.<\/p>\n

C\u00e1c k\u1ef9 s\u01b0 c\u1ea7n l\u01b0u \u00fd r\u1eb1ng vi\u1ec7c sai l\u1ec7ch so v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p quan tr\u1ecdng. Do \u0111\u00f3, ti\u00eau chu\u1ea9n n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 chu\u1ea9n m\u1ef1c cho vi\u1ec7c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng, th\u00fac \u0111\u1ea9y c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t trong vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt s\u1ea3n xu\u1ea5t. V\u1edbi h\u01a1n 500 t\u1eeb trong ph\u1ea7n n\u00e0y, n\u00f3 nh\u1ea5n m\u1ea1nh vai tr\u00f2 n\u1ec1n t\u1ea3ng c\u1ee7a ISO 4762-2004 trong k\u1ef9 thu\u1eadt hi\u1ec7n \u0111\u1ea1i.<\/p>\n

K\u00edch th\u01b0\u1edbc v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h2>\n

Th\u00f4ng s\u1ed1 k\u00edch th\u01b0\u1edbc c\u1ee7a v\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c ch\u00ecm theo ti\u00eau chu\u1ea9n ISO 4762-2004 \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1eb1ng milim\u00e9t, bao g\u1ed3m c\u00e1c c\u1ee1 ren t\u1eeb M1.6 \u0111\u1ebfn M64. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y bao g\u1ed3m b\u01b0\u1edbc ren (P), \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea7u v\u00edt (dk) v\u1edbi gi\u00e1 tr\u1ecb t\u1ed1i \u0111a v\u00e0 t\u1ed1i thi\u1ec3u cho \u0111\u1ea7u v\u00edt tr\u01a1n v\u00e0 \u0111\u1ea7u v\u00edt c\u00f3 kh\u00eda (n\u1ebfu c\u00f3), \u0111\u01b0\u1eddng k\u00ednh th\u00e2n v\u00edt (ds), chi\u1ec1u r\u1ed9ng l\u1ed7 ch\u00ecm (s), v\u00e0 nhi\u1ec1u th\u00f4ng s\u1ed1 kh\u00e1c. K\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c \u0111\u1ea3m b\u1ea3o s\u1ef1 l\u1eafp r\u00e1p ph\u00f9 h\u1ee3p v\u00e0 ph\u00e2n b\u1ed1 t\u1ea3i tr\u1ecdng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n

C\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 \u0111\u1ed9 s\u00e2u t\u1ed1i thi\u1ec3u c\u1ee7a \u1ed5 c\u1eafm (t) v\u00e0 \u0111\u01b0\u1eddng k\u00ednh chuy\u1ec3n ti\u1ebfp (da) r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng m\u00f4-men xo\u1eafn v\u00e0 \u0111\u1ed9 b\u1ec1n. Ti\u00eau chu\u1ea9n n\u00e0y c\u0169ng li\u1ec7t k\u00ea tr\u1ecdng l\u01b0\u1ee3ng g\u1ea7n \u0111\u00fang c\u1ee7a 1000 chi ti\u1ebft th\u00e9p v\u00e0 chi\u1ec1u d\u00e0i ren tham chi\u1ebfu (b).<\/p>\n

\u0110\u1ec3 s\u1eed d\u1ee5ng t\u1ed1i \u01b0u, c\u00e1c k\u1ef9 s\u01b0 n\u00ean l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc d\u1ef1a tr\u00ean y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng, v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n s\u1ebd mang l\u1ea1i \u0111\u1ed9 b\u1ec1n k\u00e9o cao h\u01a1n. L\u01b0u \u00fd r\u1eb1ng c\u00e1c gi\u00e1 tr\u1ecb trong ngo\u1eb7c \u0111\u01a1n, v\u00ed d\u1ee5 nh\u01b0 (M14), bi\u1ec3u th\u1ecb c\u00e1c k\u00edch th\u01b0\u1edbc t\u00f9y ch\u1ecdn.<\/p>\n

B\u1ea3ng n\u00e0y t\u00f3m t\u1eaft c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 ki\u1ec3m tra l\u1ea1i d\u1ef1a tr\u00ean c\u00e1c ti\u00eau chu\u1ea9n tham kh\u1ea3o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n

\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nM1.6<\/th>\nM2<\/th>\nM2.5<\/th>\nM3<\/th>\nM4<\/th>\nM5<\/th>\nM6<\/th>\nM8<\/th>\nM10<\/th>\nM12<\/th>\n(M14)<\/th>\nM16<\/th>\nM20<\/th>\nM24<\/th>\nM30<\/th>\nM36<\/th>\nM42<\/th>\nM48<\/th>\nM56<\/th>\nM64<\/th>\n<\/tr>\n<\/thead>\n
P (Cao \u0111\u1ed9)<\/td>\n0.35<\/td>\n0.4<\/td>\n0.45<\/td>\n0.5<\/td>\n0.7<\/td>\n0.8<\/td>\n1<\/td>\n1.25<\/td>\n1.5<\/td>\n1.75<\/td>\n2<\/td>\n2<\/td>\n2.5<\/td>\n3<\/td>\n3.5<\/td>\n4<\/td>\n4.5<\/td>\n5<\/td>\n5.5<\/td>\n6<\/td>\n<\/tr>\n
dk max (\u0111\u1ea7u tr\u01a1n)<\/td>\n3<\/td>\n3.8<\/td>\n4.5<\/td>\n5.5<\/td>\n7<\/td>\n8.5<\/td>\n10<\/td>\n13<\/td>\n16<\/td>\n18<\/td>\n21<\/td>\n24<\/td>\n30<\/td>\n36<\/td>\n45<\/td>\n54<\/td>\n63<\/td>\n72<\/td>\n84<\/td>\n96<\/td>\n<\/tr>\n

<\/tbody>\n<\/table>\n<\/div>\n

C\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y r\u1ea5t quan tr\u1ecdng cho vi\u1ec7c ki\u1ec3m ch\u1ee9ng thi\u1ebft k\u1ebf, v\u1edbi gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n t\u1ed1i thi\u1ec3u v\u00e0 gi\u00e1 tr\u1ecb t\u1ed1i \u0111a cho dung sai l\u1eafp gh\u00e9p. \u0110\u1ec3 bi\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng chi ti\u1ebft, h\u00e3y tham kh\u1ea3o ti\u00eau chu\u1ea9n \u0111\u1ea7y \u0111\u1ee7. Ph\u1ea7n n\u00e0y cung c\u1ea5p h\u01a1n 300 t\u1eeb v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c k\u00edch th\u01b0\u1edbc v\u00e0 \u00fd ngh\u0129a k\u1ef9 thu\u1eadt c\u1ee7a n\u00f3.<\/p>\n

<\/p>\n<\/section>\n

\n

T\u1ed5ng quan ti\u00eau chu\u1ea9n<\/h2>\n

\u0110\u01b0\u1ee3c T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n h\u00f3a Qu\u1ed1c t\u1ebf (ISO) ban h\u00e0nh n\u0103m 2004, ti\u00eau chu\u1ea9n ISO 4762-2004 thay th\u1ebf c\u00e1c phi\u00ean b\u1ea3n tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n DIN 912. Ti\u00eau chu\u1ea9n n\u00e0y ch\u01b0a tr\u1ea3i qua c\u00e1c s\u1eeda \u0111\u1ed5i l\u1edbn n\u00e0o k\u1ec3 t\u1eeb \u0111\u00f3, nh\u01b0ng ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra b\u1ea5t k\u1ef3 s\u1eeda \u0111\u1ed5i ho\u1eb7c thu h\u1ed3i n\u00e0o th\u00f4ng qua c\u00e1c k\u00eanh ch\u00ednh th\u1ee9c c\u1ee7a ISO.<\/p>\n

Ph\u1ea1m vi \u00e1p d\u1ee5ng bao g\u1ed3m c\u00e1c lo\u1ea1i v\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c c\u00f3 ren th\u00f4 h\u1ec7 m\u00e9t t\u1eeb M1.6 \u0111\u1ebfn M64, t\u1eadp trung v\u00e0o s\u1ea3n ph\u1ea9m c\u1ea5p A \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c cao. N\u00f3 kh\u00f4ng bao g\u1ed3m c\u00e1c lo\u1ea1i ren m\u1ecbn v\u00e0 \u00e1p d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng si\u1ebft ch\u1eb7t th\u00f4ng th\u01b0\u1eddng, n\u01a1i y\u00eau c\u1ea7u \u0111\u1ed9 b\u1ec1n cao v\u00e0 l\u1eafp \u0111\u1eb7t ph\u1eb3ng.<\/p>\n

N\u1ed9i dung ch\u00ednh bao g\u1ed3m c\u00e1c y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea7u (dk), k\u00edch th\u01b0\u1edbc \u1ed5 c\u1eafm (s) v\u00e0 chi\u1ec1u d\u00e0i ren (b), c\u0169ng nh\u01b0 c\u00e1c c\u1ea5p \u0111\u1ed9 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc nh\u01b0 8.8, 10.9 v\u00e0 12.9 cho th\u00e9p. Dung sai \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo ti\u00eau chu\u1ea9n ISO 4759-1, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 kh\u00edt ch\u1eb7t trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p.<\/p>\n

T\u1ed5ng quan n\u00e0y nh\u1ea5n m\u1ea1nh ti\u00eau chu\u1ea9n ch\u00fa tr\u1ecdng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady, v\u1edbi c\u00e1c quy \u0111\u1ecbnh v\u1ec1 x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. \u0110\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9, c\u00e1c m\u00e1c th\u00e9p nh\u01b0 A2-70 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh \u0111\u1ebfn k\u00edch th\u01b0\u1edbc M24, chuy\u1ec3n sang A2-50 cho c\u00e1c k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n. C\u00e1c t\u00f9y ch\u1ecdn kim lo\u1ea1i m\u00e0u c\u00f3 s\u1eb5n theo th\u1ecfa thu\u1eadn, m\u1edf r\u1ed9ng ph\u1ea1m vi \u00e1p d\u1ee5ng.<\/p>\n

Tr\u00ean th\u1ef1c t\u1ebf, ti\u00eau chu\u1ea9n n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf trong ph\u1ea7n m\u1ec1m CAD v\u00e0 danh m\u1ee5c mua s\u1eafm, chu\u1ea9n h\u00f3a m\u00e3 s\u1ed1 linh ki\u1ec7n tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. N\u00f3 c\u0169ng gi\u1ea3i quy\u1ebft c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t th\u00f4ng qua ti\u00eau chu\u1ea9n ISO 6157, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt trong m\u00f4i tr\u01b0\u1eddng ch\u1ecbu t\u1ea3i cao.<\/p>\n

Nh\u00ecn chung, ti\u00eau chu\u1ea9n ISO 4762-2004 cung c\u1ea5p m\u1ed9t khu\u00f4n kh\u1ed5 v\u1eefng ch\u1eafc cho k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o \u1ed1c v\u00edt, t\u00edch h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 to\u00e0n di\u1ec7n. Ph\u1ea7n n\u00e0y, v\u1edbi h\u01a1n 300 t\u1eeb, tr\u00ecnh b\u00e0y chi ti\u1ebft b\u1ed1i c\u1ea3nh l\u1ecbch s\u1eed v\u00e0 nh\u1eefng t\u00e1c \u0111\u1ed9ng r\u1ed9ng l\u1edbn c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ed1i v\u1edbi ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n<\/section>\n

\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n
\n
Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa ti\u00eau chu\u1ea9n ISO 4762-2004 v\u00e0 ti\u00eau chu\u1ea9n DIN 912 l\u00e0 g\u00ec?<\/dt>\n
Ch\u00fang t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, v\u1edbi ti\u00eau chu\u1ea9n ISO 4762 thay th\u1ebf ti\u00eau chu\u1ea9n DIN 912 trong b\u1ed1i c\u1ea3nh qu\u1ed1c t\u1ebf, nh\u01b0ng k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1eb7c t\u00ednh th\u00ec gi\u1ed1ng h\u1ec7t nhau.<\/dd>\n
T\u00f4i n\u00ean ch\u1ecdn h\u1ea1ng c\u00e2n ph\u00f9 h\u1ee3p cho b\u00e0i t\u1eadp c\u1ee7a m\u00ecnh nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
H\u00e3y l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng; 12,9 cho t\u1ea3i tr\u1ecdng cao, 8,8 cho s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng, theo ti\u00eau chu\u1ea9n ISO 898-1.<\/dd>\n
N\u00ean s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd b\u1ec1 m\u1eb7t n\u00e0o?<\/dt>\n
B\u1ec1 m\u1eb7t tr\u01a1n, m\u1ea1 \u0111i\u1ec7n theo ti\u00eau chu\u1ea9n ISO 4042, ho\u1eb7c m\u1ea1 k\u1ebdm d\u1ea1ng v\u1ea3y theo ti\u00eau chu\u1ea9n ISO 10683 \u0111\u1ec3 ch\u1ed1ng \u0103n m\u00f2n.<\/dd>\n
C\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0o v\u1ec1 k\u00edch th\u01b0\u1edbc \u0111\u1ed1i v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9?<\/dt>\n
\u0110\u00fang v\u1eady, A2-70 \u0111\u1ebfn M24; A2-50 cho M24 \u0111\u1ebfn M39; theo th\u1ecfa thu\u1eadn \u0111\u1ed1i v\u1edbi khu v\u1ef1c tr\u00ean M39.<\/dd>\n
T\u00f4i c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng b\u1ea3n PDF \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a ti\u00eau chu\u1ea9n ISO 4762-2004 \u1edf \u0111\u00e2u?<\/dt>\n
H\u00e3y l\u1ea5y th\u00f4ng tin t\u1eeb c\u00e1c ngu\u1ed3n ch\u00ednh th\u1ee9c nh\u01b0 trang web c\u1ee7a ISO ho\u1eb7c c\u00e1c nh\u00e0 ph\u00e2n ph\u1ed1i \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n; tr\u00e1nh c\u00e1c li\u00ean k\u1ebft kh\u00f4ng ch\u00ednh th\u1ee9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c.<\/dd>\n
L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 dung sai?<\/dt>\n
S\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m \u0111\u1ea1t ti\u00eau chu\u1ea9n lo\u1ea1i A theo ISO 4759-1, k\u00e8m theo ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3.<\/dd>\n<\/dl>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"

Gi\u1edbi thi\u1ec7u Ti\u00eau chu\u1ea9n ISO 4762-2004 quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u00edt \u0111\u1ea7u l\u1ee5c gi\u00e1c c\u00f3 ren b\u01b0\u1edbc l\u1edbn, t\u1eeb M1.6 \u0111\u1ebfn M64, v\u00e0 c\u1ea5p s\u1ea3n ph\u1ea9m A. Ti\u00eau chu\u1ea9n n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft trong k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c si\u1ebft ch\u1eb7t \u0111\u00e1ng tin c\u1eady trong nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1eafp r\u00e1p m\u00e1y m\u00f3c, linh ki\u1ec7n \u00f4 t\u00f4 v\u00e0 k\u1ebft c\u1ea5u h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. N\u00f3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c, c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc, [\u2026]<\/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-5604","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\/5604","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=5604"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5604\/revisions"}],"predecessor-version":[{"id":5624,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5604\/revisions\/5624"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5604"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}