内六角沉头螺钉

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内六角沉头螺钉GB/T70.3—2000Hexagonsocketcountersunkheatscrews----------------------------------------------------------------------------------------------------------------螺纹规格dM3M4M5M6M8M10M12(M14)M16M20P0.50.70.811.251.51.75222.5b（参考）18202224283236404452dk(max)(理论)6.728.9611.213.4417.9222.426.8830.833.640.32dk(min)(实际)5.547.539.4311.3415.2419.2223.1226.5229.0136.05ds(max)345681012141620ds(min)2.863.824.825.827.789.7811.7313.7315.7319.67e（min）2.32.873.444.585.726.869.1511.4311.4313.72s(公称)22.534568101012s(max)(12.9级)2.0452.563.0714.0845.0846.0958.11510.11510.11512.142s(max)(其他级)2.062.583.084.0955.146.148.17510.17510.17512.212s(min)2.022.523.024.025.026.028.02510.02510.02512.032k(max)1.862.483.13.724.966.27.448.48.810.16t(min)1.11.51.92.233.64.34.54.85.6r(min)0.10.20.20.250.40.40.60.60.60.8l范围8~308~408~508~6010~8012~10016~10020~10025~10030~100l系列8,10,12,16,20,25,30,35,40,45,50,55,60,65,70,80,90,100