1、搓（滚）牙径标准 一、 目的：通过规范外螺纹产品的搓（滚）牙径，以确保作业的标准化从而保障产品质量满足客户的要求。二、 范围：需搓（滚）牙产品均属之。三、 引用标准：JB/T9193-1999 ASME B1.1-1989四、 内容4.1打头类产品搓（滚）牙径标准4.1.1机牙搓（滚）牙径标准 (单位:mm)：序号螺纹规格铁线径-0.02不锈钢线径-0.02未注公差为+0.02/-0.01产品外径碳 钢不锈钢/铜MAXMIN01M2.00.40 6g1.661.671.651.671.691.981.8702M2.30.40 6g1.962.001.971.992.282.2003M2.50.
2、45 6g2.132.152.142.162.482.3804M2.60.45 6g2.232.252.23/2.252.262.682.6005M3.00.50 6g2.582.602.592.632.962.8706M3.50.60 6g3.033.053.013.053.483.3507M4.00.70 6g3.433.453.43/3.453.473.983.8408M4.50.75 6g3.903.903.923.944.454.3409M5.00.80 6g4.364.354.364.394.964.8310M6.01.00 6g5.235.255.245.285.955.8211
3、M8.01.25 6g7.077.087.077.097.947.8012M101.50 6g8.908.928.918.939.949.7613M121.75 6g10.7210.7210.7210.7411.9411.75142-56 UNC-2A1.841.851.841.862.182.08154-40 UNC-2A2.362.402.362.402.802.70166-32 UNC-2A2.892.922.912.943.463.33178-32 UNC-2A3.573.553.573.604.123.991810-32 UNF-2A4.224.254.224.254.784.641
4、910-24 UNC-2A4.024.054.054.094.784.622012-24 UNC-2A4.704.704.704.755.445.26213/16-24 UNC-2A3.974.024.004.024.724.59225/16-18 UNC-2A6.926.956.936.957.887.68235/16-24 UNF-2A7.167.187.167.187.887.72243/8-16 UNC-2A8.388.428.408.429.469.24253/8-24 UNC-2A8.748.758.748.769.469.32261/4-20 UNC-2A5.435.455.43
5、5.476.306.124.1.2三角牙搓牙径标准 (单位:mm)：P型B型序号规格牙数搓牙径径外径（C）序号规格牙数搓牙径外径（C）01M2321.521.942.0401M2401.571.881.9602M2.3281.792.252.3502M2.3321.812.182.2603M2.6242.042.542.6403M2.6282.072.472.5504M3202.332.933.0504M3242.372.852.9505M3.5182.753.453.5705M3.5202.783.343.4606M4163.093.904.0206M4183.143.813.9107M51
6、43.874.895.0307M5164.004.784.90S型序号规格牙数搓牙径外径（C）序号规格牙数搓牙径外径（C）01M20.401.671.881.96082#561.842.032.1302M2.30.401.962.182.26093#482.122.362.4603M2.60.452.242.482.56104#402.372.682.7804M30.502.592.872.95115#402.703.003.1105M3.50.603.013.363.44126#322.923.273.4306M40.703.423.853.93138#323.583.934.0907M50
7、.804.364.844.921410#244.024.544.70C型序号规格牙数搓牙径外径（C）序号规格牙数搓牙径外径（C）01M20.401.601.811.9005M3.50.602.913.243.3502M2.30.401.902.112.2006M40.703.323.703.8303M2.60.452.152.392.4907M50.804.224.684.8104M30.502.512.772.88注：S、C型公制牙纹的牙数栏目是螺距注：附P、B、S、C四种三角牙螺丝类型图例P型B型S型C型4.2车床类产品搓（滚）牙径规定：按4.1.1的规定只是其公差统一规定为“+0.02/-0.01mm”。
