PS规格最大最小最大最小(新规格Rp)M1.0*0.250.750.7850.72911.0011.15310.9171-64UNCG51.761.68M1.00.25G40.920.891/16-286.56.6326.490M1.1*0.250.850.8850.82911.5011.52011.4002-56G42.041.96M1.20.25G41.111.091/8-288.58.6378.495M1.2*0.250.950.9850.92912.5012.67612.3763-48G42.352.25M1.40.30G41.301.261/4-1911.411.54911.341M1.4*0.31.101.1421.07513.0013.15312.9174-40G52.642.54M1.60.35G41.471.433/8-1914.915.05414.846M1.6*0.351.251.3211.22113.5013.67613.3765-40G52.972.87M1.70.35G41.571.521/2-1418.618.77318.489M1.7*0.351.351.4211.32114.0014.15313.9176-32G53.223.11M1.80.35G41.671.623/4-1424.024.25923.975M1.8*0.351.451.5211.42114.5014.67614.3768-32G63.893.78M2.00.40G41.841.791-1130.230.47230.110M2*0.41.601.6791.56715.0015.15314.91710-24G64.444.30M2.20.45G52.041.9811/4-1138.839.13338.771M2.2*0.451.751.8381.71315.5015.67615.37612-24G65.074.96M2.30.40G42.142.0911/2-1144.745.02644.664M2.3*0.41.901.9791.86716.0016.15315.9171/4〞-20G75.865.73M2.50.45G52.342.272-1156.556.83756.475M2.5*0.452.102.1382.01316.0016.21015.8355/16〞-18G77.387.23M2.60.45G52.442.37M2.6*0.452.202.2382.11316.5016.67616.3763/8〞-16G78.898.72M3.00.50G52.822.75M3*0.52.502.5992.45917.0017.15316.9177/16〞-14G810.4010.02M3.50.60G53.273.19M3.5*0.62.903.0102.85018.0018.21017.8351/2〞-13G811.9211.70M4.00.70G63.723.65M4*0.73.303.4223.24218.5018.67618.3760-80UNFG51.451.39M5.00.80G64.674.59SM1/16 -801.251.2811.211M4.5*0.753.803.8783.68819.0019.15318.9171-72G51.771.70M6.01.00G75.595.49SM5/64 -641.551.5931.513M5*0.84.204.3344.13420.0020.21019.8352-64G42.061.98M7.01.00G76.596.48SM3/32 -561.91.9361.841M6*1.05.005.1534.91720.5020.67620.3763-56G42.372.29M8.01.25G77.497.36SM3/32-1002.12.1562.081M7*1.06.006.1535.91721.0021.15320.9174-48G52.682.59M101.5G79.349.22SM1/8 -322.3(2.393)(2.233)M8*1.256.806.9126.64722.0022.21021.8355-44G52.992.90M101.25G79.499.35SM1/8 -402.52.5512.421M9*1.257.807.9127.64722.5022.67622.3766-40G53.293.19M121.75G811.2311.09SM1/8 -442.52.6052.485M10*1.58.508.6768.37623.0023.15322.9178-36G53.913.81M121.25G911.5011.36SM1/8 -482.62.6572.547M11*1.59.509.6769.37623.0023.21022.83510-32G64.534.44SM9/64 -322.7(2.790)(2.630)M12*1.7510.3010.44110.10623.5023.67623.37612-28G65.135.03SM9/64 -402.92.9482.818M14*2.012.0012.21011.83524.0024.15323.9171/4〞-28G76.005.91SM11/64-323.53.5843.424M16*2.014.0014.21013.83524.5024.67624.3765/16〞-24G77.537.42SM11/64-403.73.7423.612M18*2.515.5015.74415.29425.0025.21024.8353/8〞-24G79.108.99使用铰刀时不使用铰刀时SM3/16 -243.63.6583.498M20*2.517.5017.74417.29425.5025.67625.3767/16〞-20G810.6210.481/16-275.946.156.35SM3/16 -283.83.8443.684M22*2.519.5019.74419.29426.0026.15325.9171/2〞-20G812.2012.061/8-278.338.438.74SM3/16 -323.93.9803.820M24*3.021.0021.25220.75226.0026.21025.8351/4-1810.7211.1311.13SM3/16 -404.054.1384.008M27*3.024.0024.25223.75226.5026.67626.3763/8-1814.2714.2714.68SM7/32-324.74.7744.614M30*3.526.5026.77126.21127.0027.15326.9171/2-1417.4817.8618.26SM15/64-285.05.0554.875M33*3.529.5029.77129.21127.0027.25226.752最大最小3/4-1422.6323.0123.42SM1/4-245.25.2665.086M36*4.032.0032.27031.67028.0028.21027.835No.12-324.704.8264.8231-11-1/228.5828.9829.36SM1/4-285.45.4525.272M39*4.035.0035.27034.67028.5028.67628.3761/4-325.605.6895.4871-1/4-11-1/237.3137.6938.10SM1/4-405.65.7265.59629.0029.15328.9175/16-327.107.2647.0871-1/2-11-1/243.2643.6644.45SM9/32-205.75.8245.63430.0030.21029.8353/8-328.708.8648.6622-11-1/255.1755.5856.36SM9/32-286.26.2566.06630.5030.67630.3767/16-2810.2010.33710.135SM5/16-186.36.4446.254最大最小30.0030.25229.7521/2-2811.8011.93811.710SM5/16-246.86.8646.674M1.0*0.20.800.8210.78331.0031.21030.8359/16-2413.2013.38511.132SM5/16-286.97.0506.860M1.1*0.20.900.9210.88331.5031.67631.3765/8-2414.8014.96814.732SM11/32-287.77.8437.653M1.2*0.21.001.0210.98333.5033.67633.3763/4-2017.8017.95717.679SM3/8-187.98.0537.843M1.4*0.21.201.2211.18333.0033.25232.7527/8-2021.0021.13220.854(新规格Rc)使用铰刀时不使用铰刀时SM3/8-288.58.6378.447M1.6*0.21.401.4211.38334.0034.21033.8351-2024.0024.30724.0291-16-286.16.26.2446.384SM7/16-169.39.4409.220M1.7*0.21.451.5001.46034.5034.67634.3761/8-288.18.28.2498.388SM7/16-2810.110.22410.034M1.8*0.21.601.6211.5831/4-1910.711.010.96211.174SM1/2-1210.310.42010.180M2.0*0.251.751.7851.7293/8-1914.214.514.44814.658SM1/2-2011.311.41011.190M2.2*0.251.951.9851.929最大最小1/2-1417.618.017.97918.263SM1/2-2811.711.81211.622M2.3*0.352.052.0612.001最大最小1.551.5821.4253/4-1423.023.523.37823.663SM9/16-2012.913.01812.778M2.5*0.352.202.2212.1211.251.3051.1821.801.8711.6951-1129.029.529.45929.822M2.6*0.352.202.2462.1861.551.6121.4742.102.1461.9411 1/4-1137.538.037.97638.339M3.0*0.352.702.7212.6211.851.9121.7562.302.3852.1571 1/2-1143.444.043.86944.232M3.5*0.353.503.5993.4592.102.1972.0252.602.6972.4872-1154.955.555.41255.844M4.5*0.54.004.0993.9592.402.4582.2712.802.8952.642No.6-32(3.505)螺 纹 攻 牙 底 孔 对 照 表
螺纹代号Thread Code
一、英制螺纹（螺纹牙型角55度）Thread of British standard ( Thread pitch shape
angle 55°)
1> BSW－－－－英国标准惠氏螺纹（粗牙）British Standard Whitworth Thread
( Coarse )
2> BSF－－－－英国标准惠氏螺纹（细牙）British Standard Whitworth Thread
( Fine )
3> G－－－－直管螺纹（外螺纹分A、B两面级、丝锥分G、G－D）Straight
pipe thread ( Outside ) thread in A\B: taps in G、G－D )
4> R－－－－锥管外螺纹（旧代号ZG;KG）Outside paper pipe thread ( Old
thread code ZG,KG )
5> RC－－－－锥管内螺纹（旧代号ZG;KG）Inside taper pipe thread ( Old thread
code ZG,KG )
二、美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape
angle 60°
1> UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead
of NC )
2> UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of
NF )
3> UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
4> UN－－－－－统一制不变螺距螺纹Unified thread
5> UNS－－－－统一制特殊螺纹Unified Special thread
中经公差容隙 es基本大经D，d(内)小径D1(外)小径d3螺距P2A1A和2A
00.060080UNF0.05190.04650.04471.52401.18031.13450.31750.0017620.000529
10.073064UNC0.06290.05610.05381.85421.42461.42460.39690.0019700.000591
10.073072UNF0.06400.05800.05601.85421.47231.47230.35280.0018990.000570
20.086056UNC0.07440.06670.06412.18441.69341.69340.45360.0021270.000638
20.086064UNF0.07590.06910.06682.18441.75481.75480.39690.0020400.000612
30.099048UNC0.08550.07640.07342.51461.94181.94180.52920.0023020.000691
30.099056UNF0.08740.07970.07712.51462.02362.02360.45360.0021910.000657
40.112040UNC0.09580.08490.08132.84482.15742.15740.63500.0025070.000752
40.112048UNF0.09850.08940.08642.84482.27202.27200.52920.0023610.000708
50.125040UNC0.10880.09790.09433.17502.48762.48760.63500.0025620.000769
50.125044UNF0.11020.10040.09713.17502.55012.55010.57730.0024840.000745
60.138032UNC0.11770.10420.09973.50522.64592.64590.79380.0028200.000846
规格孔径规格孔径规格孔径规格孔径M43.3M18*1.516.5ZG1/166.5G1/166.56M54.2M2017.5ZG1/88.5G1/88.56M65M20*1.518.5ZG1/411.5G1/411.45M86.7M22*1.520.5ZG3/814.95G3/814.95M108.5M2421ZG1/218.6G1/218.6M1210.2M27*1.525.5ZG3/424.1G3/424.1M1412M27*225ZG130.3G130.3M14*1.512.5M30*1.528.5ZG11/438.95G11/438.95M1614M30*228ZG11/244.8G11/244.8M16*1.514.5M33*231ZG256.65G256.65M1815.5M42*40403/4-1617.57/8-1420.4标准螺纹底孔锥螺纹底孔管螺纹底纹
0820插孔螺纹1020插孔螺纹
