不锈钢紧固件预紧力和紧固扭矩

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该表显示了 A1、A2 和 A4 不锈钢紧固件的最大允许紧固扭矩和由此产生的最大预紧力。

仅供参考

螺纹尺寸摩擦系数预紧力 (Kn) 性能等级紧固扭矩 (Nm) 性能等级最小断裂扭矩
A1-50A2-70A4-80A1-50A2-70A4-80A1-50A2-70A4-80
M1.60.10.40.550.550.10.10.20.150.20.24
0.20.30.350.350.10.20.35
0.30.20.30.30.20.250.45
M2.00.10.50.60.60.150.20.30.30.40.48
0.20.40.50.50.250.30.4
0.30.250.360.360.40.40.55
M2.50.10.650.90.90.250.450.60.60.90.96
0.20.40.50.50.450.60.65
0.30.30.30.30.60.750.8
M3.00.10.9110.8511.31.11.61.8
0.20.60.650.6511.11.6
0.30.40.450.451.251.351.85
M4.00.11.082.972.970.81.72.32.73.84.3
0.21.122.42.41.32.63.5
0.30.91.941.941.534.1
M5.00.12.264.854.851.63.44.65.57.88.8
0.21.833.933.932.45.16.9
0.31.493.193.192.86.18
M6.00.13.26.856.852.85.989.31315
0.22.595.545.544.18.811.8
0.32.094.494.494.810.413.9
M8.00.15.8612.612.66.814.519.3233237
0.24.7510.210.210.121.428.7
0.33.858.858.8511.925.533.9
M10.00.19.32202013.73039.4466574
0.27.5816.216.220.34458
0.36.1413.113.1245169
M12.00.113.629.129.123.6506780110130
0.211.123.723.734.874100
0.3919.219.24188117
M14.00.118.7404037.179106210290330
0.215.232.632.656119159
0.312.326.426.466141188
M.16.00.125.7555556121161
0.220.944.944.986183245
0.31736.436.4102218291
M18.00.132.2696981174232
0.226.256.256.2122260346
0.321.145.545.5144380411
M20.00.141.388.688.6114224325
0.233.872.472.4173370494
0.327.458.758.7205439586
M22.00.150107107148318424
0.2418888227488650
0.3347272272582776
M24.00.158142142187400534
0.247101101284608810
0.3398383338724966
M27.00.175275
0.261421
0.350503
M33.00.191374
0.275571
0.361680
M36.00.1114506
0.294779
0.376929
M39.00.1135651
0.2110998
0.3891189
0.1162842
0.21331300
0.31081553

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