美制粗螺纹1

美制粗螺纹规格（UNC)NO.1-64(1.854)NO.2-56(2.184)NO.3-48(2.515)NO.4-40(2.845)NO.5-40(3.175)NO.6-32(3.505)NO.8-32(4.166)NO.10-24(4.826)NO.12-24(5.486)1/4 -205/16 -183/8 -167/16 -141/2 -139/16 -125/8 -113/4 -107/8 -91-81-1/8-71-1/4-71-3/8-61-1/2-61-3/4-52-4-1/22级牙钻孔径标准径1.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013.6016.5019.5022.2025.0028.2030.8034.0039.5045.20最大1.5821.8712.1462.3852.6972.8953.5303.9624.5975.2576.7318.1539.55011.02312.44612.86818.84019.76122.60625.34928.52431.11534.29039.82745.593精度等级规格NO.2-56UNCNO.3-48NO.4-40NO.5-40NO.6-32NO.8-32NO.10-24NO.12-241/4-205/16-183/8-167/16-141/2-13NO.2-64UNFNO.3-56NO.4-48NO.5-44NO.6-40NO.8-36NO.10-32NO.12-281/4-285/16-243/8-247/16-201/2-20G4-G61.942.232.502.833.073.734.244.90----1.972.272.562.863.163.784.394.995.857.36---G7-G8-----3.774.304.965.727.248.7410.2011.27------4.435.045.907.419.0010.4812.07G9----------8.8110.3011.82-----------10.5412.13最小1.4251.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.14410.59211.98913.38616.30719.17721.97124.63827.81330.35333.52838.96444.679规格（UNF)NO.0-80(1.524)NO.1-72(1.854)NO.2-64(2.184)NO.3-56(2.515)NO.4-48(2.845)NO.5-44(3.175)NO.6-40(3.505)NO.8-36(4.166)NO.10-32(4.826)NO.12-28(5.846)1/4-285/16-243/8-247/16-201/2-209/16-185/8-183/4-167/8-141-121-1/8-121-1/4-121-3/8-121-1/2-12美制细螺纹2级牙钻孔径标准径1.251.551.852.102.402.702.903.504.104.605.506.908.509.9011.5012.9014.5017.5020.5023.2026.5029.5032.8036.0美制特细螺纹规格（UNEF)NO.12-321/4--325/16-323/8-327/16-281/2-289/16-245/8-243/4-207/8-201-202级牙钻孔径标准径4.705.607.108.7010.2011.8013.2014.8017.8021.0024.00美制管螺纹规格1/16-271/8-271/4-183/8-181/2-143/4-141-11-1/21-1/4-11-1/21-1/2-11-1/22-11-1/2规格2BA3BA4BA5BA6BA钻孔径NPT使用绞刀时不用绞刀时6.106.258.338.4310.7211.1314.2714.2717.4817.8622.6323.0128.5828.9837.3137.6943.6644.0455.5855.96钻孔径4.0-4.23.0-3.22.7-2.82.4-2.5NPS6.358.7411.1314.6818.2623.4229.3638.1044.4556.36最大4.8265.6907.2648.86510.33811.93813.38614.98617.95821.13324.308最小4.6235.4867.0878.66110.13511.70913.13214.73217.67820.85324.028最大1.3051.6121.9122.1972.4582.7403.0223.6064.1654.7245.5887.0358.63610.03311.60713.08114.68117.67820.67523.57126.74629.92133.09636.271最小1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4965.3606.7828.3829.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935.814美制迫牙丝攻钻孔径英制电器螺纹