螺栓打头坯径及搓牙规范目 的：通过以下规范，以确保作业的标准化从而保障产品的质量，满足客户的需求。引用标准：GB/T9193-1999 ASME B1.1-19单 位：mm规格M3M3.5M4M5M6M7M8M10螺距(P)0.50.350.60.350.70.50.80.510.7510.751.2511.51.2520UNC-2A18UNC-2A16UNC-2A6g打头坯径maxmin2.12.5972.7372.6983.0713.0253.2363.1973.5083.4573.6393.5954.444.3874.6374.5935.3035.2465.4685.4126.3056.2436.4666.4117.1357.0817.29.135.456.958.427.249.0765.426.918.398.9638.9076g牙外径max2.96/3.48/3.98/4.96/5.95/6.95/7.94/9.94/6.37.8.46min2.87/3.35/3.84/4.83/5.82/6.8/7.8/9.76/6.127.6.244H和6H两款不常用max4Hminmax6Hmin2.6692.42.6612.6172.72.7422.7562.7173.1033.0783.0923.0463.2633.2413.2553.2163.543.5133.533.4793.6663.23.6593.6154.4744.44.44.4114..4.6574.6135.495.4345.3445.3125.3295.2725.5015.4716.4996.476.3446.3096.3316.2696.4886.4337.1817.1527.1637.1097.3397.3077.3247.2669.0168.9868.9958.9399.1769.1479.15.1041/4″5/16″3/8″ 批准： 审核：李洪 校对：李洪 制表：龚校12/20
