活节螺栓规格和尺寸

　　不锈钢螺栓材料

　　1. 化学成分应在钢组规定的范围内,由制造者选择,在有晶间腐蚀倾向的场合,推荐按ISO3651-1或ISO3651-2的规定进行试验,在此情况下,推荐采用稳定型的A3和A5,或都有采用含碳量不超过0.03%的A2和A4不锈钢.

　　2.紧固件适用的不锈钢螺栓材料如图所示

　　奥氏体不锈钢螺栓、螺钉的破坏扭矩等级规格　破 坏 扭 矩 Nm　螺 纹性 能 等 级　　507080　M 1.60.150.20.24　M 20.30.40.48　M 2.50.60.90.96　M 31.11.61.8　M 42.73.84.3　M 55.57.88.8　M 69.31315　M 8233237　M 10466574　M 1280110130　M 16210290330

　　马氏体与铁素体不锈钢螺栓、螺钉、螺柱的机械性能等级

　　类 别HVHBHRC马氏体C150< M245002500,2d147-209-155-220707004100,2d209-31420-34220-330110 4)11008200,2d-36-45350-440C380/td>< M248006400.2d228-32221-35240-340C450< M248006400,2d147-209-155-220707004100,2d209-31420-34220-330铁素体F1 3)45< M244502500,2d128-209-135-220606004100,2d171-271-180-285

　　(1)膨胀螺栓性能、用途：膨胀螺栓由膨胀螺栓套管及螺栓两件组成,适用于在混凝土及砖砌体墙、地基上作锚固体。其受力性能

　　公制粗牙外螺纹常用规格极限尺寸表公称直径×螺距螺纹精度等级大径中径小径螺胚直径最大最小最大最小最大最小最大M3×0.56g2.980 2.874 2.655 2.580 2.439 2.60 2.63 M4×0.73.978 3.838 3.523 3.433 3.220 3.47 3.50 M5×0.84.976 4.826 4.456 4.361 4.110 4.40 4.43 M6×15.974 5.794 5.324 5.212 4.891 5.26 5.29 M8×1.257.972 7.760 7.160 7.042 6.619 7.10 7.14 M10×1.59.968 9.732 8.994 8.862 8.344 8.92 8.96 M12×1.7511.966 11.701 10.829 10.679 10.072 10.75 10.79 M14×213.962 13.682 12.663 12.503 11.797 12.57 12.62 M16×215.962 15.682 14.663 14.503 13.797 14.57 14.62 M18×2.517.958 17.623 16.334 16.164 15.252 16.24 16.29 M20×2.519.958 19.623 18.334 18.164 17.252 18.24 18.29 M22×2.521.958 21.623 20.334 20.164 19.252 20.24 20.29 M24×323.952 23.577 22.003 21.803 20.704 21.89 21.95 M27×326.952 26.577 25.003 24.803 23.704 24.89 24.95

　　公制粗牙内螺纹常用规格极限尺寸表公称直径×螺距螺纹精度等级大径中径小径攻丝前钻头直径最小最大最小最大最小M3×0.56H3.000 2.775 2.675 2.599 2.459 2.50 M4×0.74.000 3.663 3.545 3.422 3.242 3.30 M5×0.85.000 4.605 4.480 4.334 4.134 4.20 M6×16.000 5.500 5.350 5.153 4.917 5.00 M8×1.258.000 7.348 7.188 6.912 6.647 6.80 M10×1.510.000 9.206 9.026 8.676 8.376 8.50 M12×1.7512.000 11.063 10.863 10.441 10.106 10.20 M14×214.000 12.913 12.701 12.210 11.835 12.00 M16×216.000 14.913 14.701 14.210 13.835 14.00 M18×2.518.000 16.600 16.376 15.744 15.294 15.50 M20×2.520.000 18.600 18.376 17.744 17.294 17.50 M22×2.522.000 20.600 20.376 19.744 19.294 19.50 M24×324.000 22.316 22.051 21.252 20.752 21.00 M27×327.000 25.316 25.051 24.252 23.752 24.00