{"id":5757,"date":"2025-12-24T05:18:00","date_gmt":"2025-12-24T05:18:00","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5757"},"modified":"2025-12-24T05:18:19","modified_gmt":"2025-12-24T05:18:19","slug":"gb-t-9145-2003-thread-limit-dimensions","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/ko\/blog\/gb-t-9145-2003-thread-limit-dimensions\/","title":{"rendered":"GB\/T 9145-2003 \ub098\uc0ac\uc0b0 \uc81c\ud55c \uce58\uc218"},"content":{"rendered":"

[et_pb_section admin_label=”section”]
\n\t\t\t[et_pb_row admin_label=”row”]
\n\t\t\t\t[et_pb_column type=”4_4″][et_pb_text admin_label=”Text”]<\/p>\n

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GB\/T 9145-2003 \ud45c\uc900 \uc18c\uac1c<\/h2>\n

\uc774 \ud45c\uc900\uc740 \uae30\uacc4 \uc870\ub9bd\ud488\uc758 \ud638\ud658\uc131\uacfc \uc131\ub2a5\uc744 \ubcf4\uc7a5\ud558\uae30 \uc704\ud574 \uad8c\uc7a5 \uc2dc\ub9ac\uc988\uc758 \uc911\uac04 \uc815\ubc00\ub3c4\ub97c \uac16\ub294 \ubc94\uc6a9 \ubbf8\ud130 \ub098\uc0ac\uc0b0\uc758 \ud55c\uacc4 \uce58\uc218\ub97c \uaddc\uc815\ud569\ub2c8\ub2e4. \ub0b4\ubd80 \ubc0f \uc678\ubd80 \uc6a9\ub3c4\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uad75\uc740 \ud53c\uce58 \ubc0f \uac00\ub294 \ud53c\uce58 \ub098\uc0ac\uc0b0\uc744 \ubaa8\ub450 \ud3ec\ud568\ud558\uba70, \uc587\uc740 \ucf54\ud305\uc758 \uacbd\uc6b0 \ub3c4\uae08 \uc804\uc5d0 \uc801\uc6a9\ub418\ub294 \uacf5\ucc28\ub97c \uae30\uc900\uc73c\ub85c \ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n

\n

\ubc94\uc704<\/h2>\n

GB\/T 9145-2003\uc740 \uc77c\ubc18\uc801\uc778 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc6a9\ub3c4\uc5d0 \uc801\uc6a9 \uac00\ub2a5\ud55c \uc911\uac04 \uacf5\ucc28 \uc815\ubc00\ub3c4 \ubc0f \uad8c\uc7a5 \uc2dc\ub9ac\uc988\ub97c \uac16\ub294 \ubbf8\ud130 \ub098\uc0ac\uc0b0\uc758 \ud55c\uacc4 \uce58\uc218\ub97c \uc815\uc758\ud569\ub2c8\ub2e4. \uc774 \ud45c\uc900\uc740 \ub098\uc0ac\uc0b0 \ud504\ub85c\ud30c\uc77c\uc774 \uae30\ubcf8 \ud504\ub85c\ud30c\uc77c \ubc0f \uacf5\ucc28 \uc704\uce58\uc5d0 \uc758\ud574 \uc815\uc758\ub41c \ucd5c\ub300 \uc7ac\ub8cc \uc870\uac74\uc744 \ucd08\uacfc\ud558\uc9c0 \uc54a\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uc774\ub294 \ud2b9\ud788 \ub3c4\uae08 \ud6c4 \uac04\uc12d \uc5c6\uc774 \uc548\uc815\uc801\uc778 \uacb0\ud569\uc774 \uc694\uad6c\ub418\ub294 \uc0b0\uc5c5 \ubd84\uc57c\uc758 \uccb4\uacb0 \ubd80\ud488\uc5d0 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n

    \n
  • \uc804\uae30 \ub3c4\uae08\uacfc \uac19\uc740 \uc587\uc740 \ucf54\ud305\uc744 \ud558\uae30 \uc804\uc758 \ub098\uc0ac\uc0b0\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4.<\/li>\n
  • \ub3c4\uae08 \ud6c4 \ud504\ub85c\ud30c\uc77c\uc740 H \ub610\ub294 h \uc704\uce58 \ub0b4\uc5d0 \uc720\uc9c0\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/li>\n
  • \uade0\ud615 \uc7a1\ud78c \uac15\ub3c4\uc640 \uc81c\uc870 \uc6a9\uc774\uc131\uc744 \uc704\ud574 \uc911\uac04 \uc815\ub3c4\uc758 \uccb4\uacb0 \uae38\uc774\uc5d0 \uc911\uc810\uc744 \ub461\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/div>\n
    \n

    \uc77c\ubc18 \uc81c\ud55c \uce58\uc218<\/h2>\n

    \ub098\uc0ac\uc0b0 \ubfcc\ub9ac \ud504\ub85c\ud30c\uc77c\uc758 \uc5b4\ub5a4 \uc9c0\uc810\ub3c4 \uae30\ubcf8 \ud615\uc0c1 \ubc0f \uacf5\ucc28\uc5d0 \ub530\ub978 \ucd5c\ub300 \ud615\uc0c1 \ubc94\uc704\ub97c \ucd08\uacfc\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \ub3c4\uae08\ub41c \ub098\uc0ac\uc0b0\uc758 \uacbd\uc6b0, \ub3c4\uae08 \ud6c4 \uc2e4\uc81c \uc724\uacfd\uc740 H\/h \uc704\uce58\ub97c \ucd08\uacfc\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uc774\ub294 \uacfc\ub3c4\ud55c \uc870\uc784\uc774\ub098 \uc870\ub9bd\uccb4\uc758 \ud30c\uc190\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \ucc38\uace0: \uc774 \uacf5\ucc28\ub294 \uc587\uc740 \ub3c4\uae08\uc5d0 \uc801\ud569\ud558\uba70, \ub450\uaebc\uc6b4 \ub3c4\uae08\uc758 \uacbd\uc6b0 \uc870\uc815\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n

    \n

    \uad75\uc740 \ud53c\uce58 \ub0b4\ubd80 \ub098\uc0ac\uc0b0<\/h2>\n

    \uc911\uac04 \uc815\ubc00\ub3c4\uc758 \uacbd\uc6b0, \uccb4\uacb0 \uae38\uc774\ub294 \uc911\uac04 \uc218\uc900\uc785\ub2c8\ub2e4. \uacf5\ucc28 \uc601\uc5ed: d \u2264 1.4 mm\uc77c \uacbd\uc6b0 5H, d > 1.4 mm\uc77c \uacbd\uc6b0 6H. \ud53c\uce58 \uc9c1\uacbd D\uc758 \ud55c\uacc4\uac12.2<\/sub> \uadf8\ub9ac\uace0 \uc791\uc740 \uc9c1\uacbd D1<\/sub> \uc678\ubd80 \ub098\uc0ac\uc0b0\uacfc\uc758 \uc801\uc808\ud55c \uacb0\ud569\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \uc2e4<\/th>\n\uc57d\ud63c \uae30\uac04<\/th>\n\ud53c\uce58 \uc9c1\uacbd D2<\/sub><\/th>\n\uc18c\uc9c1\uacbd D1<\/sub><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n<\/tr>\n<\/thead>\n
    \uc5e01<\/td>\n0.6<\/td>\n1.7<\/td>\n0.894<\/td>\n0.838<\/td>\n0.785<\/td>\n0.729<\/td>\n<\/tr>\n
    \uc5e01.2<\/td>\n0.6<\/td>\n1.7<\/td>\n1.094<\/td>\n1.038<\/td>\n0.985<\/td>\n0.929<\/td>\n<\/tr>\n
    \uc5e01.4<\/td>\n0.7<\/td>\n2<\/td>\n1.265<\/td>\n1.205<\/td>\n1.142<\/td>\n1.075<\/td>\n<\/tr>\n
    M1.6<\/td>\n0.8<\/td>\n2.6<\/td>\n1.458<\/td>\n1.373<\/td>\n1.321<\/td>\n1.221<\/td>\n<\/tr>\n
    M1.8<\/td>\n0.8<\/td>\n2.6<\/td>\n1.658<\/td>\n1.573<\/td>\n1.521<\/td>\n1.421<\/td>\n<\/tr>\n
    \uc5e02<\/td>\n1<\/td>\n3<\/td>\n1.83<\/td>\n1.74<\/td>\n1.679<\/td>\n1.567<\/td>\n<\/tr>\n
    \uc5e02.5<\/td>\n1.3<\/td>\n3.8<\/td>\n2.303<\/td>\n2.208<\/td>\n2.138<\/td>\n2.013<\/td>\n<\/tr>\n
    \uc5e03<\/td>\n1.5<\/td>\n4.5<\/td>\n2.775<\/td>\n2.675<\/td>\n2.599<\/td>\n2.459<\/td>\n<\/tr>\n
    \uc5e03.5<\/td>\n1.7<\/td>\n5<\/td>\n3.222<\/td>\n3.11<\/td>\n3.01<\/td>\n2.85<\/td>\n<\/tr>\n
    \uc5e04<\/td>\n2<\/td>\n6<\/td>\n3.663<\/td>\n3.545<\/td>\n3.422<\/td>\n3.242<\/td>\n<\/tr>\n
    \uc5e05<\/td>\n2.5<\/td>\n7.5<\/td>\n4.605<\/td>\n4.48<\/td>\n4.334<\/td>\n4.134<\/td>\n<\/tr>\n
    \uc5e06<\/td>\n3<\/td>\n9<\/td>\n5.5<\/td>\n5.35<\/td>\n5.153<\/td>\n4.917<\/td>\n<\/tr>\n
    \uc5e07<\/td>\n3<\/td>\n9<\/td>\n6.5<\/td>\n6.35<\/td>\n6.153<\/td>\n5.917<\/td>\n<\/tr>\n
    \uc5e08<\/td>\n4<\/td>\n12<\/td>\n7.348<\/td>\n7.188<\/td>\n6.912<\/td>\n6.647<\/td>\n<\/tr>\n
    \uc5e010<\/td>\n5<\/td>\n15<\/td>\n9.206<\/td>\n9.026<\/td>\n8.676<\/td>\n8.376<\/td>\n<\/tr>\n
    M12<\/td>\n6<\/td>\n18<\/td>\n11.063<\/td>\n10.863<\/td>\n10.441<\/td>\n10.106<\/td>\n<\/tr>\n
    \uc5e014<\/td>\n8<\/td>\n24<\/td>\n12.913<\/td>\n12.701<\/td>\n12.21<\/td>\n11.835<\/td>\n<\/tr>\n
    M16<\/td>\n8<\/td>\n24<\/td>\n14.913<\/td>\n14.701<\/td>\n14.21<\/td>\n13.835<\/td>\n<\/tr>\n
    \uc5e018<\/td>\n10<\/td>\n30<\/td>\n16.6<\/td>\n16.376<\/td>\n15.744<\/td>\n15.294<\/td>\n<\/tr>\n
    \uc5e020<\/td>\n10<\/td>\n30<\/td>\n18.6<\/td>\n18.376<\/td>\n17.744<\/td>\n17.294<\/td>\n<\/tr>\n
    \uc5e022<\/td>\n10<\/td>\n30<\/td>\n20.6<\/td>\n20.376<\/td>\n19.744<\/td>\n19.294<\/td>\n<\/tr>\n
    \uc5e024<\/td>\n12<\/td>\n36<\/td>\n22.316<\/td>\n22.051<\/td>\n21.252<\/td>\n20.752<\/td>\n<\/tr>\n
    \uc5e027<\/td>\n12<\/td>\n36<\/td>\n25.316<\/td>\n25.051<\/td>\n24.252<\/td>\n23.752<\/td>\n<\/tr>\n
    \uc5e030<\/td>\n15<\/td>\n45<\/td>\n28.007<\/td>\n27.727<\/td>\n26.771<\/td>\n26.211<\/td>\n<\/tr>\n
    \uc5e033<\/td>\n15<\/td>\n45<\/td>\n31.007<\/td>\n30.727<\/td>\n29.771<\/td>\n29.211<\/td>\n<\/tr>\n
    \uc5e036<\/td>\n18<\/td>\n53<\/td>\n33.702<\/td>\n33.402<\/td>\n32.27<\/td>\n31.67<\/td>\n<\/tr>\n
    M39<\/td>\n18<\/td>\n53<\/td>\n36.702<\/td>\n36.402<\/td>\n35.27<\/td>\n34.67<\/td>\n<\/tr>\n
    M42<\/td>\n21<\/td>\n63<\/td>\n39.392<\/td>\n39.077<\/td>\n37.799<\/td>\n37.129<\/td>\n<\/tr>\n
    M45<\/td>\n21<\/td>\n63<\/td>\n42.392<\/td>\n42.077<\/td>\n40.799<\/td>\n40.129<\/td>\n<\/tr>\n
    M48<\/td>\n24<\/td>\n71<\/td>\n45.087<\/td>\n44.752<\/td>\n43.297<\/td>\n42.587<\/td>\n<\/tr>\n
    M52<\/td>\n24<\/td>\n71<\/td>\n49.087<\/td>\n48.752<\/td>\n46.681<\/td>\n45.971<\/td>\n<\/tr>\n
    M56<\/td>\n28<\/td>\n85<\/td>\n52.783<\/td>\n52.428<\/td>\n50.796<\/td>\n50.046<\/td>\n<\/tr>\n
    \uc5e060<\/td>\n28<\/td>\n85<\/td>\n56.783<\/td>\n56.428<\/td>\n54.796<\/td>\n54.046<\/td>\n<\/tr>\n
    M64<\/td>\n32<\/td>\n95<\/td>\n60.478<\/td>\n60.103<\/td>\n58.305<\/td>\n57.505<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    \uc774\ub7ec\ud55c \uce58\uc218\ub294 \ub108\ud2b8 \uc81c\uc870\uc5d0 \ub300\ud55c \uc9c0\uce68\uc744 \uc81c\uacf5\ud558\uc5ec \uc911\uac04 \ud558\uc911 \uc870\uac74\uc5d0\uc11c \ubcfc\ud2b8\uc640\uc758 \ud638\ud658\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n

    \n

    \uad75\uc740 \ud53c\uce58 \uc678\ubd80 \ub098\uc0ac\uc0b0<\/h2>\n

    \uc911\uac04 \uc815\ubc00\ub3c4, \uc911\uac04 \uc815\ub3c4\uc758 \uc811\ucd09. \uacf5\ucc28 \uc601\uc5ed: d \u2264 1.4 mm\uc77c \uacbd\uc6b0 6h, d > 1.4 mm\uc77c \uacbd\uc6b0 6g. \uc678\uacbd d \ubc0f \ud53c\uce58 \uc9c1\uacbd d\uc758 \ud55c\uacc4\uac12.2<\/sub>GB\/T 197-2003\uc5d0 \ub530\ub978 \ucd5c\uc18c \ub8e8\ud2b8 \ubc18\uacbd\uc744 \uac16\uc2b5\ub2c8\ub2e4.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \uc2e4<\/th>\n\uc57d\ud63c \uae30\uac04<\/th>\n\uc8fc\uc694 \uc9c1\uacbd d<\/th>\n\ud53c\uce58 \uc9c1\uacbd d2<\/sub><\/th>\n\ucd5c\uc18c \ub8e8\ud2b8 \ubc18\uacbd\uc5d0\uc774<\/sup><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\uc18c<\/th>\n<\/tr>\n<\/thead>\n
    \uc5e01<\/td>\n0.6<\/td>\n1.7<\/td>\n1<\/td>\n0.933<\/td>\n0.838<\/td>\n0.785<\/td>\n0.031<\/td>\n<\/tr>\n
    \uc5e01.2<\/td>\n0.6<\/td>\n1.7<\/td>\n1.2<\/td>\n1.133<\/td>\n1.038<\/td>\n0.985<\/td>\n0.031<\/td>\n<\/tr>\n
    \uc5e01.4<\/td>\n0.7<\/td>\n2<\/td>\n1.4<\/td>\n1.325<\/td>\n1.205<\/td>\n1.149<\/td>\n0.038<\/td>\n<\/tr>\n
    M1.6<\/td>\n0.8<\/td>\n2.6<\/td>\n1.581<\/td>\n1.496<\/td>\n1.354<\/td>\n1.291<\/td>\n0.044<\/td>\n<\/tr>\n
    M1.8<\/td>\n0.8<\/td>\n2.6<\/td>\n1.781<\/td>\n1.696<\/td>\n1.554<\/td>\n1.491<\/td>\n0.044<\/td>\n<\/tr>\n
    \uc5e02<\/td>\n1<\/td>\n3<\/td>\n1.981<\/td>\n1.886<\/td>\n1.721<\/td>\n1.654<\/td>\n0.05<\/td>\n<\/tr>\n
    \uc5e02.5<\/td>\n1.3<\/td>\n3.8<\/td>\n2.48<\/td>\n2.38<\/td>\n2.188<\/td>\n2.117<\/td>\n0.056<\/td>\n<\/tr>\n
    \uc5e03<\/td>\n1.5<\/td>\n4.5<\/td>\n2.98<\/td>\n2.874<\/td>\n2.655<\/td>\n2.58<\/td>\n0.063<\/td>\n<\/tr>\n
    \uc5e03.5<\/td>\n1.7<\/td>\n5<\/td>\n3.479<\/td>\n3.354<\/td>\n3.089<\/td>\n3.004<\/td>\n0.075<\/td>\n<\/tr>\n
    \uc5e04<\/td>\n2<\/td>\n6<\/td>\n3.978<\/td>\n3.838<\/td>\n3.523<\/td>\n3.433<\/td>\n0.088<\/td>\n<\/tr>\n
    \uc5e05<\/td>\n2.5<\/td>\n7.5<\/td>\n4.976<\/td>\n4.826<\/td>\n4.456<\/td>\n4.361<\/td>\n0.1<\/td>\n<\/tr>\n
    \uc5e06<\/td>\n3<\/td>\n9<\/td>\n5.974<\/td>\n5.794<\/td>\n5.324<\/td>\n5.212<\/td>\n0.125<\/td>\n<\/tr>\n
    \uc5e07<\/td>\n3<\/td>\n9<\/td>\n6.974<\/td>\n6.794<\/td>\n6.324<\/td>\n6.212<\/td>\n0.125<\/td>\n<\/tr>\n
    \uc5e08<\/td>\n4<\/td>\n12<\/td>\n7.972<\/td>\n7.76<\/td>\n7.16<\/td>\n7.042<\/td>\n0.156<\/td>\n<\/tr>\n
    \uc5e010<\/td>\n5<\/td>\n15<\/td>\n9.968<\/td>\n9.732<\/td>\n8.994<\/td>\n8.862<\/td>\n0.188<\/td>\n<\/tr>\n
    M12<\/td>\n6<\/td>\n18<\/td>\n11.966<\/td>\n11.701<\/td>\n10.829<\/td>\n10.679<\/td>\n0.219<\/td>\n<\/tr>\n
    \uc5e014<\/td>\n8<\/td>\n24<\/td>\n13.962<\/td>\n13.682<\/td>\n12.663<\/td>\n12.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M16<\/td>\n8<\/td>\n24<\/td>\n15.962<\/td>\n15.682<\/td>\n14.663<\/td>\n14.503<\/td>\n0.25<\/td>\n<\/tr>\n
    \uc5e018<\/td>\n10<\/td>\n30<\/td>\n17.958<\/td>\n17.623<\/td>\n16.334<\/td>\n16.164<\/td>\n0.313<\/td>\n<\/tr>\n
    \uc5e020<\/td>\n10<\/td>\n30<\/td>\n19.958<\/td>\n19.623<\/td>\n18.334<\/td>\n18.164<\/td>\n0.313<\/td>\n<\/tr>\n
    \uc5e022<\/td>\n10<\/td>\n30<\/td>\n21.958<\/td>\n21.623<\/td>\n20.334<\/td>\n20.164<\/td>\n0.313<\/td>\n<\/tr>\n
    \uc5e024<\/td>\n12<\/td>\n36<\/td>\n23.952<\/td>\n23.577<\/td>\n22.003<\/td>\n21.803<\/td>\n0.375<\/td>\n<\/tr>\n
    \uc5e027<\/td>\n12<\/td>\n36<\/td>\n26.952<\/td>\n26.577<\/td>\n25.003<\/td>\n24.803<\/td>\n0.375<\/td>\n<\/tr>\n
    \uc5e030<\/td>\n15<\/td>\n45<\/td>\n29.947<\/td>\n29.522<\/td>\n27.674<\/td>\n27.462<\/td>\n0.438<\/td>\n<\/tr>\n
    \uc5e033<\/td>\n15<\/td>\n45<\/td>\n32.947<\/td>\n32.522<\/td>\n30.674<\/td>\n30.462<\/td>\n0.438<\/td>\n<\/tr>\n
    \uc5e036<\/td>\n18<\/td>\n53<\/td>\n35.94<\/td>\n35.465<\/td>\n33.342<\/td>\n33.118<\/td>\n0.5<\/td>\n<\/tr>\n
    M39<\/td>\n18<\/td>\n53<\/td>\n38.94<\/td>\n38.465<\/td>\n36.342<\/td>\n36.118<\/td>\n0.5<\/td>\n<\/tr>\n
    M42<\/td>\n21<\/td>\n63<\/td>\n41.937<\/td>\n41.437<\/td>\n39.014<\/td>\n38.778<\/td>\n0.563<\/td>\n<\/tr>\n
    M45<\/td>\n21<\/td>\n63<\/td>\n44.937<\/td>\n44.437<\/td>\n42.014<\/td>\n41.778<\/td>\n0.563<\/td>\n<\/tr>\n
    M48<\/td>\n24<\/td>\n71<\/td>\n47.929<\/td>\n47.399<\/td>\n44.681<\/td>\n44.431<\/td>\n0.625<\/td>\n<\/tr>\n
    M52<\/td>\n24<\/td>\n71<\/td>\n51.929<\/td>\n51.399<\/td>\n48.681<\/td>\n48.431<\/td>\n0.625<\/td>\n<\/tr>\n
    M56<\/td>\n28<\/td>\n85<\/td>\n55.925<\/td>\n55.365<\/td>\n52.353<\/td>\n52.088<\/td>\n0.688<\/td>\n<\/tr>\n
    \uc5e060<\/td>\n28<\/td>\n85<\/td>\n59.925<\/td>\n59.365<\/td>\n56.353<\/td>\n56.088<\/td>\n0.688<\/td>\n<\/tr>\n
    M64<\/td>\n32<\/td>\n95<\/td>\n63.92<\/td>\n63.32<\/td>\n60.023<\/td>\n59.743<\/td>\n0.75<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    \uc5d0\uc774<\/sup> \ub8e8\ud2b8 \ubc18\uacbd\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740 GB\/T 197-2003 7\uc7a5 \ubc0f \ud45c 9\ub97c \ucc38\uc870\ud558\uc2ed\uc2dc\uc624. \uc774\ub294 \uc751\ub825 \ubd84\ud3ec \ubc0f \ud53c\ub85c \uc800\ud56d\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n

    \n

    \ubbf8\uc138 \ud53c\uce58 \ub0b4\ubd80 \ub098\uc0ac\uc0b0<\/h2>\n

    \uc911\uac04 \uc815\ubc00\ub3c4, \uc911\uac04 \uc815\ub3c4\uc758 \uccb4\uacb0\ub825, 6H \uacf5\ucc28 \ubc94\uc704. \ubbf8\uc138\ud55c \ud53c\uce58\ub294 \ub354 \ub098\uc740 \uc9c4\ub3d9 \uc800\ud56d\uc131\uacfc \uc870\uc815 \uc815\ubc00\ub3c4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \uc2e4<\/th>\n\uc57d\ud63c \uae30\uac04<\/th>\n\ud53c\uce58 \uc9c1\uacbd D2<\/sub><\/th>\n\uc18c\uc9c1\uacbd D1<\/sub><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n<\/tr>\n<\/thead>\n
    \uc5e08\u00d71<\/td>\n3<\/td>\n9<\/td>\n7.5<\/td>\n7.35<\/td>\n7.153<\/td>\n6.917<\/td>\n<\/tr>\n
    \uc5e010\u00d71<\/td>\n4<\/td>\n12<\/td>\n9.5<\/td>\n9.35<\/td>\n9.153<\/td>\n8.917<\/td>\n<\/tr>\n
    M10\u00d71.25<\/td>\n4<\/td>\n12<\/td>\n9.348<\/td>\n9.188<\/td>\n8.912<\/td>\n8.647<\/td>\n<\/tr>\n
    M12\u00d71.25<\/td>\n4.5<\/td>\n13<\/td>\n11.368<\/td>\n11.188<\/td>\n10.912<\/td>\n10.647<\/td>\n<\/tr>\n
    M12\u00d71.5<\/td>\n4.5<\/td>\n13<\/td>\n11.216<\/td>\n11.026<\/td>\n10.676<\/td>\n10.376<\/td>\n<\/tr>\n
    M14\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n13.216<\/td>\n13.026<\/td>\n12.676<\/td>\n12.376<\/td>\n<\/tr>\n
    M16\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n15.216<\/td>\n15.026<\/td>\n14.676<\/td>\n14.376<\/td>\n<\/tr>\n
    M18\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n17.216<\/td>\n17.026<\/td>\n16.676<\/td>\n16.376<\/td>\n<\/tr>\n
    M18\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n16.913<\/td>\n16.701<\/td>\n16.21<\/td>\n15.835<\/td>\n<\/tr>\n
    M20\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n19.216<\/td>\n19.026<\/td>\n18.676<\/td>\n18.376<\/td>\n<\/tr>\n
    \uc5e020\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n18.913<\/td>\n18.701<\/td>\n18.21<\/td>\n17.835<\/td>\n<\/tr>\n
    M22\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n21.216<\/td>\n21.026<\/td>\n20.676<\/td>\n20.376<\/td>\n<\/tr>\n
    \uc5e022\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n20.913<\/td>\n20.701<\/td>\n20.21<\/td>\n19.835<\/td>\n<\/tr>\n
    \uc5e024\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n22.925<\/td>\n22.701<\/td>\n22.21<\/td>\n21.835<\/td>\n<\/tr>\n
    \uc5e027\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n25.925<\/td>\n25.701<\/td>\n25.21<\/td>\n24.835<\/td>\n<\/tr>\n
    M30\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n28.925<\/td>\n28.701<\/td>\n28.21<\/td>\n27.835<\/td>\n<\/tr>\n
    \uc5e033\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n31.925<\/td>\n31.701<\/td>\n31.21<\/td>\n30.835<\/td>\n<\/tr>\n
    M36\u00d73<\/td>\n12<\/td>\n36<\/td>\n34.316<\/td>\n34.051<\/td>\n33.252<\/td>\n32.752<\/td>\n<\/tr>\n
    \uc5e039\u00d73<\/td>\n12<\/td>\n36<\/td>\n37.316<\/td>\n37.051<\/td>\n36.252<\/td>\n35.752<\/td>\n<\/tr>\n
    M42\u00d73<\/td>\n12<\/td>\n36<\/td>\n40.316<\/td>\n40.051<\/td>\n39.252<\/td>\n38.752<\/td>\n<\/tr>\n
    M45\u00d73<\/td>\n12<\/td>\n36<\/td>\n43.316<\/td>\n43.051<\/td>\n42.252<\/td>\n41.752<\/td>\n<\/tr>\n
    M48\u00d73<\/td>\n15<\/td>\n45<\/td>\n46.331<\/td>\n46.051<\/td>\n45.252<\/td>\n44.752<\/td>\n<\/tr>\n
    M52\u00d74<\/td>\n19<\/td>\n56<\/td>\n49.717<\/td>\n49.402<\/td>\n48.27<\/td>\n47.67<\/td>\n<\/tr>\n
    M56\u00d74<\/td>\n19<\/td>\n56<\/td>\n53.717<\/td>\n53.402<\/td>\n52.27<\/td>\n51.67<\/td>\n<\/tr>\n
    M60\u00d74<\/td>\n19<\/td>\n56<\/td>\n57.717<\/td>\n57.402<\/td>\n56.27<\/td>\n55.67<\/td>\n<\/tr>\n
    M64\u00d74<\/td>\n19<\/td>\n56<\/td>\n61.717<\/td>\n61.402<\/td>\n60.27<\/td>\n59.67<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    \uc774\ub7ec\ud55c \uac12\ub4e4\uc740 \uace0\uc9c4\ub3d9 \ud658\uacbd\uc5d0\uc11c \ub354\uc6b1 \uc815\ubc00\ud55c \ud558\uc911 \ubd84\uc0b0\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n

    \n

    \ubbf8\uc138 \ud53c\uce58 \uc678\ubd80 \ub098\uc0ac\uc0b0<\/h2>\n

    \uc911\uac04 \uc815\ubc00\ub3c4, \uc911\uac04 \uc815\ub3c4\uc758 \uc811\ucd09\ub825, 6g \ud5c8\uc6a9 \uc624\ucc28 \ubc94\uc704. \ud5a5\uc0c1\ub41c \uc804\ub2e8 \uac15\ub3c4\ub97c \uc704\ud574 \ub354 \uac15\ud55c \ucf54\uc5b4 \ubd80\ubd84\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \uc2e4<\/th>\n\uc57d\ud63c \uae30\uac04<\/th>\n\uc8fc\uc694 \uc9c1\uacbd d<\/th>\n\ud53c\uce58 \uc9c1\uacbd d2<\/sub><\/th>\n\ucd5c\uc18c \ub8e8\ud2b8 \ubc18\uacbd\uc5d0\uc774<\/sup><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\ub300<\/th>\n\ucd5c\uc18c<\/th>\n\ucd5c\uc18c<\/th>\n<\/tr>\n<\/thead>\n
    \uc5e08\u00d71<\/td>\n3<\/td>\n9<\/td>\n7.974<\/td>\n7.794<\/td>\n7.324<\/td>\n7.212<\/td>\n0.125<\/td>\n<\/tr>\n
    \uc5e010\u00d71<\/td>\n4<\/td>\n12<\/td>\n9.974<\/td>\n9.794<\/td>\n9.324<\/td>\n9.212<\/td>\n0.125<\/td>\n<\/tr>\n
    M10\u00d71.25<\/td>\n4<\/td>\n12<\/td>\n9.972<\/td>\n9.76<\/td>\n9.16<\/td>\n9.042<\/td>\n0.156<\/td>\n<\/tr>\n
    M12\u00d71.25<\/td>\n4.5<\/td>\n13<\/td>\n11.972<\/td>\n11.76<\/td>\n11.16<\/td>\n11.028<\/td>\n0.156<\/td>\n<\/tr>\n
    M12\u00d71.5<\/td>\n4.5<\/td>\n13<\/td>\n11.968<\/td>\n11.732<\/td>\n10.994<\/td>\n10.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M14\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n13.968<\/td>\n13.732<\/td>\n12.994<\/td>\n12.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M16\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n15.968<\/td>\n15.732<\/td>\n14.994<\/td>\n14.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M18\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n17.968<\/td>\n17.732<\/td>\n16.994<\/td>\n16.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M18\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n17.962<\/td>\n17.682<\/td>\n16.663<\/td>\n16.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M20\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n19.968<\/td>\n19.732<\/td>\n18.994<\/td>\n18.854<\/td>\n0.188<\/td>\n<\/tr>\n
    \uc5e020\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n19.962<\/td>\n19.682<\/td>\n18.663<\/td>\n18.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M22\u00d71.5<\/td>\n5.6<\/td>\n16<\/td>\n21.968<\/td>\n21.732<\/td>\n20.994<\/td>\n20.854<\/td>\n0.188<\/td>\n<\/tr>\n
    \uc5e022\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n21.962<\/td>\n21.682<\/td>\n20.663<\/td>\n20.503<\/td>\n0.25<\/td>\n<\/tr>\n
    \uc5e024\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n23.962<\/td>\n23.682<\/td>\n22.663<\/td>\n22.493<\/td>\n0.25<\/td>\n<\/tr>\n
    \uc5e027\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n26.962<\/td>\n26.682<\/td>\n25.663<\/td>\n25.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M30\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n29.962<\/td>\n29.682<\/td>\n28.663<\/td>\n28.493<\/td>\n0.25<\/td>\n<\/tr>\n
    \uc5e033\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n32.962<\/td>\n32.682<\/td>\n31.663<\/td>\n31.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M36\u00d73<\/td>\n12<\/td>\n36<\/td>\n35.952<\/td>\n35.577<\/td>\n34.003<\/td>\n33.803<\/td>\n0.375<\/td>\n<\/tr>\n
    \uc5e039\u00d73<\/td>\n12<\/td>\n36<\/td>\n38.952<\/td>\n38.577<\/td>\n37.003<\/td>\n36.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M42\u00d73<\/td>\n12<\/td>\n36<\/td>\n41.952<\/td>\n41.577<\/td>\n40.003<\/td>\n39.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M45\u00d73<\/td>\n12<\/td>\n36<\/td>\n44.952<\/td>\n44.577<\/td>\n43.003<\/td>\n42.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M48\u00d73<\/td>\n15<\/td>\n45<\/td>\n47.952<\/td>\n47.577<\/td>\n46.003<\/td>\n45.791<\/td>\n0.375<\/td>\n<\/tr>\n
    M52\u00d74<\/td>\n19<\/td>\n56<\/td>\n51.94<\/td>\n51.465<\/td>\n49.342<\/td>\n49.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M56\u00d74<\/td>\n19<\/td>\n56<\/td>\n55.94<\/td>\n55.465<\/td>\n53.342<\/td>\n53.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M60\u00d74<\/td>\n19<\/td>\n56<\/td>\n59.94<\/td>\n59.465<\/td>\n57.342<\/td>\n57.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M64\u00d74<\/td>\n19<\/td>\n56<\/td>\n63.94<\/td>\n63.465<\/td>\n61.342<\/td>\n61.106<\/td>\n0.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    \uc5d0\uc774<\/sup> \uc751\ub825 \uc9d1\uc911\uc744 \ubc29\uc9c0\ud558\ub294 \ub370 \uc911\uc694\ud55c \ub8e8\ud2b8 \ubc18\uacbd \uc0ac\uc591\uc740 GB\/T 197-2003\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n

    \n

    \uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n

    \ub0b4\ubd80 \uad75\uc740 \ub098\uc0ac\uc0b0\uc5d0 \uc801\uc6a9\ub418\ub294 \uacf5\ucc28 \uc601\uc5ed\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n

    \uc9c1\uacbd\uc774 1.4mm \uc774\ud558\uc778 \uacbd\uc6b0 5H, 1.4mm \ucd08\uacfc\uc778 \uacbd\uc6b0 6H\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc911\uac04 \uc815\ub3c4\uc758 \uc815\ubc00\ub3c4\ub97c \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n

    \ub3c4\uae08\uc740 \ub098\uc0ac\uc0b0 \uce58\uc218\uc5d0 \uc5b4\ub5a4 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\uae4c?<\/h3>\n

    \ud5c8\uc6a9 \uc624\ucc28\ub294 \ub3c4\uae08 \uc804 \uae30\uc900\uc774\uba70, \ub3c4\uae08 \ud6c4 \ud504\ub85c\ud30c\uc77c\uc740 \uc870\ub9bd\uc131\uc744 \uc720\uc9c0\ud558\uae30 \uc704\ud574 \uc587\uc740 \ucf54\ud305\uc758 \uacbd\uc6b0 H\/h \uc704\uce58\ub97c \ucd08\uacfc\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n

    \uac00\ub294 \ub098\uc0ac\uc0b0\uc744 \uc0ac\uc6a9\ud558\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc77c\uae4c\uc694?<\/h3>\n

    \uc774 \uc81c\ud488\ub4e4\uc740 \ud45c 3\uacfc 4\uc5d0 \uc81c\uc2dc\ub41c \ud55c\uacc4\uce58 \ub300\ube44 \ub354 \uac15\ub825\ud55c \ucf54\uc5b4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc9c4\ub3d9 \uc800\ud56d\uc131\uc774 \ub354 \ub6f0\uc5b4\ub098\uace0 \ubbf8\uc138 \uc870\uc815\uc774 \ub354 \uc6a9\uc774\ud569\ub2c8\ub2e4.<\/p>\n

    \ud3c9\uade0\uc801\uc778 \uc57d\ud63c \uae30\uac04\uc740 \uc5b4\ub290 \uc815\ub3c4\uc778\uac00\uc694?<\/h3>\n

    \ub098\uc0ac\uc0b0 \uac15\ub3c4\uc640 \ube44\uc6a9\uc758 \uade0\ud615\uc744 \ub9de\ucd94\uc2ed\uc2dc\uc624. \uacfc\ub3c4\ud558\uac70\ub098 \ubd80\uc871\ud55c \uccb4\uacb0\uc744 \ubc29\uc9c0\ud558\ub824\uba74 \ud2b9\uc815 \ubc94\uc704\uc5d0 \ub300\ud55c \ud45c \uac12\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n

    \ub8e8\ud2b8 \ubc18\uc9c0\ub984\uc744 \uc5b4\ub5bb\uac8c \ud574\uc11d\ud574\uc57c \ud560\uae4c\uc694?<\/h3>\n

    GB\/T 197-2003\uc5d0 \ub530\ub978 \ucd5c\uc18c\uac12\uc740 \uc2a4\ud2b8\ub808\uc2a4\ub97c \uc904\uc5ec\uc8fc\uba70, \ud53c\ub85c\uc5d0 \ucde8\uc57d\ud55c \uc751\uc6a9 \ubd84\uc57c\uc5d0 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n

    \uc774\ub7ec\ud55c \uc81c\ud55c\uc740 \ubaa8\ub4e0 \uc7ac\ub8cc\uc5d0 \uc801\uc6a9\ub418\ub294 \uac83\uc778\uac00\uc694?<\/h3>\n

    \ub124, \ud558\uc9c0\ub9cc \ud2b9\uc218 \ub3c4\uae08\uc5d0 \ub530\ub77c \uc870\uc815\ud574\uc57c \ud569\ub2c8\ub2e4. \ub450\uaebc\uc6b4 \ucf54\ud305\uc73c\ub85c \uc778\ud574 \ub098\uc0ac\uc0b0 \ud06c\uae30\uac00 \ucee4\uc57c \ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 \ud45c\uc900 \uaddc\uaca9\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n

     [\/et_pb_text][\/et_pb_column]
    \n\t\t\t[\/et_pb_row]
    \n\t\t[\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"

    Introduction to GB\/T 9145-2003 Standard This standard specifies limit dimensions for general-purpose metric screw threads of medium accuracy in the preferred series, ensuring interchangeability and performance in mechanical assemblies. It covers coarse and fine pitch threads for internal and external applications, with tolerances applied before plating for thin coatings. Scope GB\/T 9145-2003 defines the limit […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

    \r\n

    Introduction to GB\/T 9145-2003 Standard<\/h2>\r\nThis standard specifies limit dimensions for general-purpose metric screw threads of medium accuracy in the preferred series, ensuring interchangeability and performance in mechanical assemblies. It covers coarse and fine pitch threads for internal and external applications, with tolerances applied before plating for thin coatings.\r\n\r\n<\/div>\r\n
    \r\n

    Scope<\/h2>\r\nGB\/T 9145-2003 defines the limit dimensions for metric screw threads with medium tolerance precision and preferred series, applicable to general engineering purposes. It ensures that thread profiles do not exceed the maximum material condition defined by basic profiles and tolerance positions. This is crucial for fasteners in industries requiring reliable mating without interference, especially post-plating.\r\n
      \r\n \t
    • Applies to threads before thin coatings like electroplating.<\/li>\r\n \t
    • Post-plating, profiles must stay within H or h positions.<\/li>\r\n \t
    • Focuses on medium engagement lengths for balanced strength and manufacturability.<\/li>\r\n<\/ul>\r\n<\/div>\r\n
      \r\n

      General Limit Dimensions<\/h2>\r\nNo point on the thread root profile shall exceed the maximum entity profile per basic form and tolerance. For plated threads, actual contours post-plating must not surpass H\/h positions. This prevents over-tightening or failure in assemblies. Note: Tolerances suit thin platings; heavier coatings require adjustments.\r\n\r\n<\/div>\r\n
      \r\n

      Coarse Pitch Internal Threads<\/h2>\r\nFor medium precision, engagement length is medium. Tolerance zones: 5H for d \u2264 1.4 mm; 6H for d > 1.4 mm. Limits for pitch diameter D2<\/sub> and minor diameter D1<\/sub> ensure proper fit with external threads.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nPitch Diameter D2<\/sub><\/th>\r\nMinor Diameter D1<\/sub><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M1<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n0.894<\/td>\r\n0.838<\/td>\r\n0.785<\/td>\r\n0.729<\/td>\r\n<\/tr>\r\n
      M1.2<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1.094<\/td>\r\n1.038<\/td>\r\n0.985<\/td>\r\n0.929<\/td>\r\n<\/tr>\r\n
      M1.4<\/td>\r\n0.7<\/td>\r\n2<\/td>\r\n1.265<\/td>\r\n1.205<\/td>\r\n1.142<\/td>\r\n1.075<\/td>\r\n<\/tr>\r\n
      M1.6<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.458<\/td>\r\n1.373<\/td>\r\n1.321<\/td>\r\n1.221<\/td>\r\n<\/tr>\r\n
      M1.8<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.658<\/td>\r\n1.573<\/td>\r\n1.521<\/td>\r\n1.421<\/td>\r\n<\/tr>\r\n
      M2<\/td>\r\n1<\/td>\r\n3<\/td>\r\n1.83<\/td>\r\n1.74<\/td>\r\n1.679<\/td>\r\n1.567<\/td>\r\n<\/tr>\r\n
      M2.5<\/td>\r\n1.3<\/td>\r\n3.8<\/td>\r\n2.303<\/td>\r\n2.208<\/td>\r\n2.138<\/td>\r\n2.013<\/td>\r\n<\/tr>\r\n
      M3<\/td>\r\n1.5<\/td>\r\n4.5<\/td>\r\n2.775<\/td>\r\n2.675<\/td>\r\n2.599<\/td>\r\n2.459<\/td>\r\n<\/tr>\r\n
      M3.5<\/td>\r\n1.7<\/td>\r\n5<\/td>\r\n3.222<\/td>\r\n3.11<\/td>\r\n3.01<\/td>\r\n2.85<\/td>\r\n<\/tr>\r\n
      M4<\/td>\r\n2<\/td>\r\n6<\/td>\r\n3.663<\/td>\r\n3.545<\/td>\r\n3.422<\/td>\r\n3.242<\/td>\r\n<\/tr>\r\n
      M5<\/td>\r\n2.5<\/td>\r\n7.5<\/td>\r\n4.605<\/td>\r\n4.48<\/td>\r\n4.334<\/td>\r\n4.134<\/td>\r\n<\/tr>\r\n
      M6<\/td>\r\n3<\/td>\r\n9<\/td>\r\n5.5<\/td>\r\n5.35<\/td>\r\n5.153<\/td>\r\n4.917<\/td>\r\n<\/tr>\r\n
      M7<\/td>\r\n3<\/td>\r\n9<\/td>\r\n6.5<\/td>\r\n6.35<\/td>\r\n6.153<\/td>\r\n5.917<\/td>\r\n<\/tr>\r\n
      M8<\/td>\r\n4<\/td>\r\n12<\/td>\r\n7.348<\/td>\r\n7.188<\/td>\r\n6.912<\/td>\r\n6.647<\/td>\r\n<\/tr>\r\n
      M10<\/td>\r\n5<\/td>\r\n15<\/td>\r\n9.206<\/td>\r\n9.026<\/td>\r\n8.676<\/td>\r\n8.376<\/td>\r\n<\/tr>\r\n
      M12<\/td>\r\n6<\/td>\r\n18<\/td>\r\n11.063<\/td>\r\n10.863<\/td>\r\n10.441<\/td>\r\n10.106<\/td>\r\n<\/tr>\r\n
      M14<\/td>\r\n8<\/td>\r\n24<\/td>\r\n12.913<\/td>\r\n12.701<\/td>\r\n12.21<\/td>\r\n11.835<\/td>\r\n<\/tr>\r\n
      M16<\/td>\r\n8<\/td>\r\n24<\/td>\r\n14.913<\/td>\r\n14.701<\/td>\r\n14.21<\/td>\r\n13.835<\/td>\r\n<\/tr>\r\n
      M18<\/td>\r\n10<\/td>\r\n30<\/td>\r\n16.6<\/td>\r\n16.376<\/td>\r\n15.744<\/td>\r\n15.294<\/td>\r\n<\/tr>\r\n
      M20<\/td>\r\n10<\/td>\r\n30<\/td>\r\n18.6<\/td>\r\n18.376<\/td>\r\n17.744<\/td>\r\n17.294<\/td>\r\n<\/tr>\r\n
      M22<\/td>\r\n10<\/td>\r\n30<\/td>\r\n20.6<\/td>\r\n20.376<\/td>\r\n19.744<\/td>\r\n19.294<\/td>\r\n<\/tr>\r\n
      M24<\/td>\r\n12<\/td>\r\n36<\/td>\r\n22.316<\/td>\r\n22.051<\/td>\r\n21.252<\/td>\r\n20.752<\/td>\r\n<\/tr>\r\n
      M27<\/td>\r\n12<\/td>\r\n36<\/td>\r\n25.316<\/td>\r\n25.051<\/td>\r\n24.252<\/td>\r\n23.752<\/td>\r\n<\/tr>\r\n
      M30<\/td>\r\n15<\/td>\r\n45<\/td>\r\n28.007<\/td>\r\n27.727<\/td>\r\n26.771<\/td>\r\n26.211<\/td>\r\n<\/tr>\r\n
      M33<\/td>\r\n15<\/td>\r\n45<\/td>\r\n31.007<\/td>\r\n30.727<\/td>\r\n29.771<\/td>\r\n29.211<\/td>\r\n<\/tr>\r\n
      M36<\/td>\r\n18<\/td>\r\n53<\/td>\r\n33.702<\/td>\r\n33.402<\/td>\r\n32.27<\/td>\r\n31.67<\/td>\r\n<\/tr>\r\n
      M39<\/td>\r\n18<\/td>\r\n53<\/td>\r\n36.702<\/td>\r\n36.402<\/td>\r\n35.27<\/td>\r\n34.67<\/td>\r\n<\/tr>\r\n
      M42<\/td>\r\n21<\/td>\r\n63<\/td>\r\n39.392<\/td>\r\n39.077<\/td>\r\n37.799<\/td>\r\n37.129<\/td>\r\n<\/tr>\r\n
      M45<\/td>\r\n21<\/td>\r\n63<\/td>\r\n42.392<\/td>\r\n42.077<\/td>\r\n40.799<\/td>\r\n40.129<\/td>\r\n<\/tr>\r\n
      M48<\/td>\r\n24<\/td>\r\n71<\/td>\r\n45.087<\/td>\r\n44.752<\/td>\r\n43.297<\/td>\r\n42.587<\/td>\r\n<\/tr>\r\n
      M52<\/td>\r\n24<\/td>\r\n71<\/td>\r\n49.087<\/td>\r\n48.752<\/td>\r\n46.681<\/td>\r\n45.971<\/td>\r\n<\/tr>\r\n
      M56<\/td>\r\n28<\/td>\r\n85<\/td>\r\n52.783<\/td>\r\n52.428<\/td>\r\n50.796<\/td>\r\n50.046<\/td>\r\n<\/tr>\r\n
      M60<\/td>\r\n28<\/td>\r\n85<\/td>\r\n56.783<\/td>\r\n56.428<\/td>\r\n54.796<\/td>\r\n54.046<\/td>\r\n<\/tr>\r\n
      M64<\/td>\r\n32<\/td>\r\n95<\/td>\r\n60.478<\/td>\r\n60.103<\/td>\r\n58.305<\/td>\r\n57.505<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\nThese dimensions provide guidance for nut manufacturing, ensuring compatibility with bolts under medium load conditions.\r\n\r\n<\/div>\r\n
      \r\n

      Coarse Pitch External Threads<\/h2>\r\nMedium precision, medium engagement. Tolerance zones: 6h for d \u2264 1.4 mm; 6g for d > 1.4 mm. Limits for major diameter d and pitch diameter d2<\/sub>, with min root radius per GB\/T 197-2003.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nMajor Diameter d<\/th>\r\nPitch Diameter d2<\/sub><\/th>\r\nMin Root Radiusa<\/sup><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M1<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1<\/td>\r\n0.933<\/td>\r\n0.838<\/td>\r\n0.785<\/td>\r\n0.031<\/td>\r\n<\/tr>\r\n
      M1.2<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1.2<\/td>\r\n1.133<\/td>\r\n1.038<\/td>\r\n0.985<\/td>\r\n0.031<\/td>\r\n<\/tr>\r\n
      M1.4<\/td>\r\n0.7<\/td>\r\n2<\/td>\r\n1.4<\/td>\r\n1.325<\/td>\r\n1.205<\/td>\r\n1.149<\/td>\r\n0.038<\/td>\r\n<\/tr>\r\n
      M1.6<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.581<\/td>\r\n1.496<\/td>\r\n1.354<\/td>\r\n1.291<\/td>\r\n0.044<\/td>\r\n<\/tr>\r\n
      M1.8<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.781<\/td>\r\n1.696<\/td>\r\n1.554<\/td>\r\n1.491<\/td>\r\n0.044<\/td>\r\n<\/tr>\r\n
      M2<\/td>\r\n1<\/td>\r\n3<\/td>\r\n1.981<\/td>\r\n1.886<\/td>\r\n1.721<\/td>\r\n1.654<\/td>\r\n0.05<\/td>\r\n<\/tr>\r\n
      M2.5<\/td>\r\n1.3<\/td>\r\n3.8<\/td>\r\n2.48<\/td>\r\n2.38<\/td>\r\n2.188<\/td>\r\n2.117<\/td>\r\n0.056<\/td>\r\n<\/tr>\r\n
      M3<\/td>\r\n1.5<\/td>\r\n4.5<\/td>\r\n2.98<\/td>\r\n2.874<\/td>\r\n2.655<\/td>\r\n2.58<\/td>\r\n0.063<\/td>\r\n<\/tr>\r\n
      M3.5<\/td>\r\n1.7<\/td>\r\n5<\/td>\r\n3.479<\/td>\r\n3.354<\/td>\r\n3.089<\/td>\r\n3.004<\/td>\r\n0.075<\/td>\r\n<\/tr>\r\n
      M4<\/td>\r\n2<\/td>\r\n6<\/td>\r\n3.978<\/td>\r\n3.838<\/td>\r\n3.523<\/td>\r\n3.433<\/td>\r\n0.088<\/td>\r\n<\/tr>\r\n
      M5<\/td>\r\n2.5<\/td>\r\n7.5<\/td>\r\n4.976<\/td>\r\n4.826<\/td>\r\n4.456<\/td>\r\n4.361<\/td>\r\n0.1<\/td>\r\n<\/tr>\r\n
      M6<\/td>\r\n3<\/td>\r\n9<\/td>\r\n5.974<\/td>\r\n5.794<\/td>\r\n5.324<\/td>\r\n5.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M7<\/td>\r\n3<\/td>\r\n9<\/td>\r\n6.974<\/td>\r\n6.794<\/td>\r\n6.324<\/td>\r\n6.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M8<\/td>\r\n4<\/td>\r\n12<\/td>\r\n7.972<\/td>\r\n7.76<\/td>\r\n7.16<\/td>\r\n7.042<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M10<\/td>\r\n5<\/td>\r\n15<\/td>\r\n9.968<\/td>\r\n9.732<\/td>\r\n8.994<\/td>\r\n8.862<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M12<\/td>\r\n6<\/td>\r\n18<\/td>\r\n11.966<\/td>\r\n11.701<\/td>\r\n10.829<\/td>\r\n10.679<\/td>\r\n0.219<\/td>\r\n<\/tr>\r\n
      M14<\/td>\r\n8<\/td>\r\n24<\/td>\r\n13.962<\/td>\r\n13.682<\/td>\r\n12.663<\/td>\r\n12.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M16<\/td>\r\n8<\/td>\r\n24<\/td>\r\n15.962<\/td>\r\n15.682<\/td>\r\n14.663<\/td>\r\n14.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M18<\/td>\r\n10<\/td>\r\n30<\/td>\r\n17.958<\/td>\r\n17.623<\/td>\r\n16.334<\/td>\r\n16.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M20<\/td>\r\n10<\/td>\r\n30<\/td>\r\n19.958<\/td>\r\n19.623<\/td>\r\n18.334<\/td>\r\n18.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M22<\/td>\r\n10<\/td>\r\n30<\/td>\r\n21.958<\/td>\r\n21.623<\/td>\r\n20.334<\/td>\r\n20.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M24<\/td>\r\n12<\/td>\r\n36<\/td>\r\n23.952<\/td>\r\n23.577<\/td>\r\n22.003<\/td>\r\n21.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M27<\/td>\r\n12<\/td>\r\n36<\/td>\r\n26.952<\/td>\r\n26.577<\/td>\r\n25.003<\/td>\r\n24.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M30<\/td>\r\n15<\/td>\r\n45<\/td>\r\n29.947<\/td>\r\n29.522<\/td>\r\n27.674<\/td>\r\n27.462<\/td>\r\n0.438<\/td>\r\n<\/tr>\r\n
      M33<\/td>\r\n15<\/td>\r\n45<\/td>\r\n32.947<\/td>\r\n32.522<\/td>\r\n30.674<\/td>\r\n30.462<\/td>\r\n0.438<\/td>\r\n<\/tr>\r\n
      M36<\/td>\r\n18<\/td>\r\n53<\/td>\r\n35.94<\/td>\r\n35.465<\/td>\r\n33.342<\/td>\r\n33.118<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M39<\/td>\r\n18<\/td>\r\n53<\/td>\r\n38.94<\/td>\r\n38.465<\/td>\r\n36.342<\/td>\r\n36.118<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M42<\/td>\r\n21<\/td>\r\n63<\/td>\r\n41.937<\/td>\r\n41.437<\/td>\r\n39.014<\/td>\r\n38.778<\/td>\r\n0.563<\/td>\r\n<\/tr>\r\n
      M45<\/td>\r\n21<\/td>\r\n63<\/td>\r\n44.937<\/td>\r\n44.437<\/td>\r\n42.014<\/td>\r\n41.778<\/td>\r\n0.563<\/td>\r\n<\/tr>\r\n
      M48<\/td>\r\n24<\/td>\r\n71<\/td>\r\n47.929<\/td>\r\n47.399<\/td>\r\n44.681<\/td>\r\n44.431<\/td>\r\n0.625<\/td>\r\n<\/tr>\r\n
      M52<\/td>\r\n24<\/td>\r\n71<\/td>\r\n51.929<\/td>\r\n51.399<\/td>\r\n48.681<\/td>\r\n48.431<\/td>\r\n0.625<\/td>\r\n<\/tr>\r\n
      M56<\/td>\r\n28<\/td>\r\n85<\/td>\r\n55.925<\/td>\r\n55.365<\/td>\r\n52.353<\/td>\r\n52.088<\/td>\r\n0.688<\/td>\r\n<\/tr>\r\n
      M60<\/td>\r\n28<\/td>\r\n85<\/td>\r\n59.925<\/td>\r\n59.365<\/td>\r\n56.353<\/td>\r\n56.088<\/td>\r\n0.688<\/td>\r\n<\/tr>\r\n
      M64<\/td>\r\n32<\/td>\r\n95<\/td>\r\n63.92<\/td>\r\n63.32<\/td>\r\n60.023<\/td>\r\n59.743<\/td>\r\n0.75<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\na<\/sup> See GB\/T 197-2003 Chapter 7 and Table 9 for root radius details. These ensure stress distribution and fatigue resistance.\r\n\r\n<\/div>\r\n
      \r\n

      Fine Pitch Internal Threads<\/h2>\r\nMedium precision, medium engagement, 6H tolerance zone. Fine pitches offer better vibration resistance and adjustment precision.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nPitch Diameter D2<\/sub><\/th>\r\nMinor Diameter D1<\/sub><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M8\u00d71<\/td>\r\n3<\/td>\r\n9<\/td>\r\n7.5<\/td>\r\n7.35<\/td>\r\n7.153<\/td>\r\n6.917<\/td>\r\n<\/tr>\r\n
      M10\u00d71<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.5<\/td>\r\n9.35<\/td>\r\n9.153<\/td>\r\n8.917<\/td>\r\n<\/tr>\r\n
      M10\u00d71.25<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.348<\/td>\r\n9.188<\/td>\r\n8.912<\/td>\r\n8.647<\/td>\r\n<\/tr>\r\n
      M12\u00d71.25<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.368<\/td>\r\n11.188<\/td>\r\n10.912<\/td>\r\n10.647<\/td>\r\n<\/tr>\r\n
      M12\u00d71.5<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.216<\/td>\r\n11.026<\/td>\r\n10.676<\/td>\r\n10.376<\/td>\r\n<\/tr>\r\n
      M14\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n13.216<\/td>\r\n13.026<\/td>\r\n12.676<\/td>\r\n12.376<\/td>\r\n<\/tr>\r\n
      M16\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n15.216<\/td>\r\n15.026<\/td>\r\n14.676<\/td>\r\n14.376<\/td>\r\n<\/tr>\r\n
      M18\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.216<\/td>\r\n17.026<\/td>\r\n16.676<\/td>\r\n16.376<\/td>\r\n<\/tr>\r\n
      M18\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n16.913<\/td>\r\n16.701<\/td>\r\n16.21<\/td>\r\n15.835<\/td>\r\n<\/tr>\r\n
      M20\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.216<\/td>\r\n19.026<\/td>\r\n18.676<\/td>\r\n18.376<\/td>\r\n<\/tr>\r\n
      M20\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n18.913<\/td>\r\n18.701<\/td>\r\n18.21<\/td>\r\n17.835<\/td>\r\n<\/tr>\r\n
      M22\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.216<\/td>\r\n21.026<\/td>\r\n20.676<\/td>\r\n20.376<\/td>\r\n<\/tr>\r\n
      M22\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n20.913<\/td>\r\n20.701<\/td>\r\n20.21<\/td>\r\n19.835<\/td>\r\n<\/tr>\r\n
      M24\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n22.925<\/td>\r\n22.701<\/td>\r\n22.21<\/td>\r\n21.835<\/td>\r\n<\/tr>\r\n
      M27\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n25.925<\/td>\r\n25.701<\/td>\r\n25.21<\/td>\r\n24.835<\/td>\r\n<\/tr>\r\n
      M30\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n28.925<\/td>\r\n28.701<\/td>\r\n28.21<\/td>\r\n27.835<\/td>\r\n<\/tr>\r\n
      M33\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n31.925<\/td>\r\n31.701<\/td>\r\n31.21<\/td>\r\n30.835<\/td>\r\n<\/tr>\r\n
      M36\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n34.316<\/td>\r\n34.051<\/td>\r\n33.252<\/td>\r\n32.752<\/td>\r\n<\/tr>\r\n
      M39\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n37.316<\/td>\r\n37.051<\/td>\r\n36.252<\/td>\r\n35.752<\/td>\r\n<\/tr>\r\n
      M42\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n40.316<\/td>\r\n40.051<\/td>\r\n39.252<\/td>\r\n38.752<\/td>\r\n<\/tr>\r\n
      M45\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n43.316<\/td>\r\n43.051<\/td>\r\n42.252<\/td>\r\n41.752<\/td>\r\n<\/tr>\r\n
      M48\u00d73<\/td>\r\n15<\/td>\r\n45<\/td>\r\n46.331<\/td>\r\n46.051<\/td>\r\n45.252<\/td>\r\n44.752<\/td>\r\n<\/tr>\r\n
      M52\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n49.717<\/td>\r\n49.402<\/td>\r\n48.27<\/td>\r\n47.67<\/td>\r\n<\/tr>\r\n
      M56\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n53.717<\/td>\r\n53.402<\/td>\r\n52.27<\/td>\r\n51.67<\/td>\r\n<\/tr>\r\n
      M60\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n57.717<\/td>\r\n57.402<\/td>\r\n56.27<\/td>\r\n55.67<\/td>\r\n<\/tr>\r\n
      M64\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n61.717<\/td>\r\n61.402<\/td>\r\n60.27<\/td>\r\n59.67<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\nThese values support finer load distribution in high-vibration environments.\r\n\r\n<\/div>\r\n
      \r\n

      Fine Pitch External Threads<\/h2>\r\nMedium precision, medium engagement, 6g tolerance zone. Provides stronger core sections for enhanced shear strength.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nMajor Diameter d<\/th>\r\nPitch Diameter d2<\/sub><\/th>\r\nMin Root Radiusa<\/sup><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M8\u00d71<\/td>\r\n3<\/td>\r\n9<\/td>\r\n7.974<\/td>\r\n7.794<\/td>\r\n7.324<\/td>\r\n7.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M10\u00d71<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.974<\/td>\r\n9.794<\/td>\r\n9.324<\/td>\r\n9.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M10\u00d71.25<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.972<\/td>\r\n9.76<\/td>\r\n9.16<\/td>\r\n9.042<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M12\u00d71.25<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.972<\/td>\r\n11.76<\/td>\r\n11.16<\/td>\r\n11.028<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M12\u00d71.5<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.968<\/td>\r\n11.732<\/td>\r\n10.994<\/td>\r\n10.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M14\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n13.968<\/td>\r\n13.732<\/td>\r\n12.994<\/td>\r\n12.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M16\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n15.968<\/td>\r\n15.732<\/td>\r\n14.994<\/td>\r\n14.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M18\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.968<\/td>\r\n17.732<\/td>\r\n16.994<\/td>\r\n16.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M18\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.962<\/td>\r\n17.682<\/td>\r\n16.663<\/td>\r\n16.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M20\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.968<\/td>\r\n19.732<\/td>\r\n18.994<\/td>\r\n18.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M20\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.962<\/td>\r\n19.682<\/td>\r\n18.663<\/td>\r\n18.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M22\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.968<\/td>\r\n21.732<\/td>\r\n20.994<\/td>\r\n20.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M22\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.962<\/td>\r\n21.682<\/td>\r\n20.663<\/td>\r\n20.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M24\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n23.962<\/td>\r\n23.682<\/td>\r\n22.663<\/td>\r\n22.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M27\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n26.962<\/td>\r\n26.682<\/td>\r\n25.663<\/td>\r\n25.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M30\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n29.962<\/td>\r\n29.682<\/td>\r\n28.663<\/td>\r\n28.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M33\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n32.962<\/td>\r\n32.682<\/td>\r\n31.663<\/td>\r\n31.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M36\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n35.952<\/td>\r\n35.577<\/td>\r\n34.003<\/td>\r\n33.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M39\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n38.952<\/td>\r\n38.577<\/td>\r\n37.003<\/td>\r\n36.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M42\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n41.952<\/td>\r\n41.577<\/td>\r\n40.003<\/td>\r\n39.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M45\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n44.952<\/td>\r\n44.577<\/td>\r\n43.003<\/td>\r\n42.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M48\u00d73<\/td>\r\n15<\/td>\r\n45<\/td>\r\n47.952<\/td>\r\n47.577<\/td>\r\n46.003<\/td>\r\n45.791<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M52\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n51.94<\/td>\r\n51.465<\/td>\r\n49.342<\/td>\r\n49.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M56\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n55.94<\/td>\r\n55.465<\/td>\r\n53.342<\/td>\r\n53.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M60\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n59.94<\/td>\r\n59.465<\/td>\r\n57.342<\/td>\r\n57.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M64\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n63.94<\/td>\r\n63.465<\/td>\r\n61.342<\/td>\r\n61.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\na<\/sup> See GB\/T 197-2003 for root radius specifications, critical for avoiding stress concentrations.\r\n\r\n<\/div>\r\n
      \r\n

      FAQ<\/h2>\r\n

      What tolerance zones apply to coarse internal threads?<\/h3>\r\n5H for diameters \u22641.4 mm; 6H for >1.4 mm, ensuring medium precision fit.\r\n

      How does plating affect thread dimensions?<\/h3>\r\nTolerances are pre-plating; post-plating profiles must not exceed H\/h positions for thin coatings to maintain assembly.\r\n

      Why use fine pitch threads?<\/h3>\r\nThey provide better vibration resistance and finer adjustments, with stronger cores per limits in tables 3 and 4.\r\n

      What is medium engagement length?<\/h3>\r\nIt balances thread strength and cost; use table values for specific ranges to avoid over- or under-engagement.\r\n

      How to interpret root radius?<\/h3>\r\nMin values per GB\/T 197-2003 reduce stress; essential for fatigue-prone applications.\r\n

      Are these limits for all materials?<\/h3>\r\nYes, but adjust for special platings; consult standard for heavy coatings requiring oversized threads.\r\n\r\n<\/div>\r\n ","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5757","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/posts\/5757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/comments?post=5757"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/posts\/5757\/revisions"}],"predecessor-version":[{"id":5760,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/posts\/5757\/revisions\/5760"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/media?parent=5757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/categories?post=5757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/ko\/wp-json\/wp\/v2\/tags?post=5757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}