常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm（按较小值）的螺栓;B级用于D>24或L>10D或L>150胺较小值）的螺栓外六角螺栓尺寸规格伽图）钢构造连接用螺栓性能等级分3.64.64.85.66.88.89.810.9、12.9等10余个等级，其中8.8级及以上螺栓材质为低碳合金钢或中碳钢并经热处理〔淬火、回火〕，通称为高强度螺栓，其余通称为普通螺栓。螺栓性能等级标号有两局部数字组成，分别表示螺栓材料的公称抗拉强度值和屈强比值。例如，性能等级4.6级的螺栓，其含义是：1、螺栓材质公称抗拉强度达4MPa级；2、螺栓材质的屈强比值为0.63、螺栓材质的公称屈服强度达4x0.6=240MPa级性能等级10.9级高强度螺栓，其材料经过热处理后，能到达：1、螺栓材质公称抗拉强度达10MPa级；2、螺栓材质的屈强比值为0.93、螺栓材质的公称屈服强度达10x0.9=9MPa级螺栓性能等级的含义是国际通用的标准，一样性能等级的螺栓，不管其材料和产地的区别，其性能是一样的，设计上只选用性能等级即可。常用螺丝规格表类别规格牙距成品外径线径类别规格牙数每英寸）成品外径线径最大最小士0.02mm最大最小士0.02mm国标粗牙60°M1.40.301.381.341.16英制粗牙551/8403.1453.032.70M1.70.351.681.611.425/32323.9453.7953.38M2.00.401.981.891.683/16244.7324.5924.M2.30.402.282.191.981/4206.326.1655.45M2.50.452.482.382.155/16187.9057.7376.94M3.00.502.982.882.603/8169.499.3128.40M3.50.63.473.363.027/161411.010.89.840-78M4.00.703.983.833.401/21212.6612.4611.22M4.50.754.474.363.889/161214.2514.0412.81M5.00.804.984.834.305/81115.8315.6114.27M6.01.005.975.825.18美制粗牙604*402.8242.6952.37M7.01.006.976.826.185*403.1543.0262.69M8.01.257.967.797.026*323.4843.3332.91M9.01.258.968.798.018*324.1423.9913.57M101.509.969.778.8410*244.84.6184.05M111.5010.9710.739.8412*245.4615.2794.70M121.7511.9511.7610.71/4206.3226.1175.45M142.0013.9513.7412.55/16187.9077.6876.93M162.0015.9515.7414.53/8169.4919.2548.40M182.5017.9517.7116.27/161411.0810.829.83M202.5019.9519.7118.21/21312.6612.3911.32国标细牙60°M4.00.503.973.863.589/161214.2513.9612.80M4.50.504.474.364.075/81115.8315.5314.26M5.00.504.974.864.57美制粗牙604*482.8772.7132.44M6.00.755.975.855.415*443.1573.0362.73M7.00.756.976.856.416*403.4843.3563.021.0-4.144.M8.007.977.837.248*36563.631.04.804.65M9.008.978.838.2410*32314.231.05.465.29M1009.979.829.2312*28164.811.21/46.32M1059.969.819.072846.165.681.211.911.75/167.907.72M1257611.0724977.161.511.911.73/89.499.31M1206910.8924758.741.513.913.77/1611.010.8M1406912.89208710.181.515.915.71/212.