六角薄螺母（GB/T41-2000）（GB/T6170-2000）（GB/T6172.1-2000）标记示例螺纹规格D=M12，性能等级为5级，无表面处理：螺母GB/T41-螺纹规格D=M12，性能等级8，无需表面处理。六角螺母：螺母GB/T6170级为D 16，B级为D ＞161。部位的尺 螺纹规格D /T418.6310.8914.2017.5919.8526.1732.9539.5550.8560.7972.07 6./T6170 668.7911.0514.3817.7720.0326.7532.9539.5550.8560.7972.02GB/T6172?6.017.668.7911.0514.3817.7720.0326 .7532.9539.550.8560.7972./T6170 5./T6172 /T415.66.99.512.218.7225.431.534.9gb/T6170 2.4. 75.26.8181.52525.25.2525.25.2525.2525.2525.2525.25.2525.2525.2525.2525.2525.：毫米螺纹公称直径 (d) (M14) 螺栓螺距 (P) 0.50。7812.7315.7317.7320.67da最3.64.75.76.89.211.213.715.7ds最（基准基准基准尺寸最（基准基准）23019.27519.27522.27514.14214..515.5最1.61.82.22.42.7dw最低23.1725.8728.8731.8134.8134.8134.8138.6143.61最小值6.87.69.510.41.412.11.11.11.11.11.11.11.11.11.11.111.11.11 and inter ant and inter inter inter inter ant in ant in ant in ant in ant in ant in ant in ant in 8.881：1：1：1章节： A 2-50，A2-70，2列在强度12.9.0804.0955.1406.1406.1408.17510.17512.212.2122.5603.0804.0955.0956.0956.0958.1151.11512.142 .3812.3315.3317.2320.17最小1.151.41.92.33.34.85.8螺纹的公称直线(d)M16(M18)M20(M22)M24(M27)M30螺栓螺距(P)2.52.52.5参考最大(底座尺寸)最大24.3327.3330.3333.3936.3940.3945.39 23.6726.6729.6732.6135.6139.6147.671da 1 .222.424.426.430.433.4ds最大(基准尺寸)730最小15.7317.7319.6721.6723.6726.6729.67最小16.0016.0019.4419.4421.7321.7325.15最大1.451. 872.042.042.042.892.89最大（基准尺寸）730最小15.5717.5719.4821.4823.4826。4829.48最小0.60.60.80.80。892.89最大(基准尺寸)730最小15.5717.5719.4821.4823.4826。4829.48最小0.60.60.80.80.8公称(基准尺寸)922最小14.03214.03217.05017.05019.06519.06522.065最大14.21214.21217.23017.23019.27519.27522.27514.14214..515.5最大1.61.82.22.42.7dw最小23.1725.8728.8731.8134.8138.6143.61最小6.87.78.69.510.412.113.1：1 列 s（最大）适用于强度 8.8 和 10.9 的内容，性状 A 2-50、A2-70 和 2 列适用于强度 12.9 的内容。 30.40.50.60.81.21.4dw min 5.076.538.039.3812.3315.3317.2320.17 min 1.151.41.92.33.34.85.8 公称螺纹直径 (d) M16 (M18) M20 (M22) M24 (M27) (M30 螺距) P)2.52.52.5参考最大(基准尺寸)最大24.3327.3330.3333.3936.3940.3945.39最小23.6726.6729.6732.6135.6139.6144.61da最大17.720.222.424.426.430.433.4ds最大(基准尺寸)730最小15.7317.7319.6721.6723.6726 . 6729.67最小16.0016.0019.4419.4421.7321.7325.15最大1.451.872.042.042.042.892.89最大(基准尺寸)730最小15。03217.05017.05019.06519 .06522.065最大14.21214.21217.23017.23019.27519.27522.27514.14214..515.5最大1.61.82.22.42.7dw最小23.1725.8728.8731.8134.8138.6143.61最小6.87.78.69.510.412.113.1：s(最大)的1栏适用于强度8.8和10.9及性状A 2-50、A2-70含量 ，第2栏适用于 强度12.9含量。3333.3936.3940.3945.39最小23.6726.6729.6732.6135.6139.6144.61da最大.434.724.434.724 433.4ds最大(基准尺寸)730最小15.7317.7319.6721.6723.6726.6729.67最小16.0016.0019.4419.4421.7321.7325.15最大1.451.872.042.04 042.042.892.89最大(基准尺寸)730最小15.5717.5719.4821.4823.4826.4829.48最小0.60.60.80.80.8公称(基准尺寸)922最小14.03214.03217.05017.05019.06519.06522.065最大14.21214.21217.23017.23019.27519.27522.27514.14214..515.5最大 1.61.82.22.42.7dw 最小 23.1725.8728.8731.8134.8138.6143.61 最小 6.87.78.69.510.412.113.1：s（最大）的 1 列适用于强度 8.8 和 10.9 以及特征 A 2-50、A2-70 内容, 2 for with ? 12.9.3333.3936.3940.3945.39最小23.6726.6729.6732.6135.6139.6144.61da最大17.720.222.424.426.430.433.4ds最大(基准尺寸)730最小15.7317.7319.6721.6723.6726.6729.67最小16.0016.0019.4419 .4421.7321.7325.15最大1.451.872.042。042.042.892.89最大(基准尺寸)730最小15.5717.5719.4821.4823.4826.4829.48最小0.60.60.80.80.8公称(基准尺寸)922最小14.03214.03217.05017.05019.06519.06522.065最大14.21214.21217.23017.23019.27519.27522.27514.14214..515.5最大 1.61.82.22.42.7dw 最小 23.1725.8728.8731.8134.8138.6143.61 最小 6.87.78.69.510.412.113.1：s（最大）的 1 列适用于强度 8.8 和 10.9 以及特征 A 2-50、A2-70 内容, 2 for with ? 12.9.21214.21217.23017.23019.27519.27522.27514.14214..515.5最大1.61.82.22.42.7dw最小23.1725.8728.8731.8134.8138.6143.61最小6.87.78.69.510.412.113.1：s(最大)的1栏适用 于强度8.8及10.9及性状 of A2-50, A2-70 ,

然而内六角螺栓螺帽尺寸，经双方协议内六角螺栓螺帽尺寸，强度12.9的内容也可适用于第1栏。螺纹公称直径M20以上的s（最大）适用于所有强度和形状内容。：尽量不要在螺纹的公称直径上使用括号。备注：1.头部侧面有直线或网线【参考JIS值】。另外，需要无滚花的商品时，订货方必须注明。但dk（最大值）是表中带 的值。2、螺纹公称直径的推荐公称长度（?）为粗线框内的内容。如果?比虚线短，则为全螺纹，柄部的不全螺纹长度约为3P。3.如果标称长度（?）比虚线位置长，?g（最大）和 ?s（最小）根据以下公式确定。?g（最大）=标称长度（?）-b?s（最小）=?g（最大）-5P2。内六角螺栓单位：mm螺纹公称直径（d）。标称长度。765.245.766.247.718.29109.7110 ..6512..6516..516..5825.424.53029.5830.429.5126..535.511..540.516 ... 545.5 50.5 24 28 21 26 15.75 54.4 55.6 31 20.75 59.4 60.6 36 25.75 322 65 64.4 65.6 30.75 37 70 69.4 70.6 35.75 42 80 79.4 80.6 45.75 52 90 89.3 90.7 100 99.3 100.7 110 109.3 110.7 120 119.3 120.7 130 129.2 130.8 140 139.2 140.8 150 149.2 150.8 160 159.2 160.8 180 179.2 180.8 200 199.05 200.95 220 219.05 220.95 240 239.05 240.95 260 258.95 261.05 280 278.95 281.05 300 298.95 301。mm 螺纹公称直径 (d)。标称长度。765.245.766.247.718.29109.7110 ..6512..6516..516..5825.424.53029.5830.429.5126..535.511..540.516 ... 545.5 50.5 24 28 21 26 15.75 54.4 55.6 31 20.75 59.4 60.6 36 25.75 322 65 64.4 65.6 30.75 37 70 69.4 70.6 35.75 42 80 79.4 80.6 45.75 52 90 89.3 90.7 100 99.3 100.7 110 109.3 110.7 120 119.3 120.7 130 129.2 130.8 140 139.2 140.8 150 149.2 150.8 160 159.2 160.8 180 179.2 180.8 200 199.05 200.95 220 219.05 220.95 240 239.05 240.95 260 258.95 261.05 280 278.95 281.05 300 298.95 301。mm 螺纹公称直径 (d)。标称长度。765.245.766.247.718.29109.7110 ..6512..6516..516..5825.424.53029.5830.429.5126..535.511..540.516 ... 545.5 50.5 24 28 21 26 15.75 54.4 55.6 31 20.75 59.4 60.6 36 25.75 322 65 64.4 65.6 30.75 37 70 69.4 70.6 35.75 42 80 79.4 80.6 45.75 52 90 89.3 90.7 100 99.3 100.7 110 109.3 110.7 120 119.3 120.7 130 129.2 130.8 140 139.2 140.8 150 149.2 150.8 160 159.2 160.8 180 179.2 180.8 200 199.05 200.95 220 219.05 220.95 240 239.05 240.95 260 258.95 261.05 280 278.95 281.05 300 298.95 301。