螺纹基本尺寸对照表.docx

1、螺纹基本尺寸对照表英制管螺纹基本尺寸及公差（牙形角 55o） BSPP螺纹代号G1/8 28G1/4 19G3/8 19G1/2 14G5/8 14G3/4 14G1 11G1.1/4 11G1.1/2 11G2 11G2.1/2 ” X11G3” X11G3.1/2 ” X11基本直径内螺纹外螺纹A 级B 级大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差9.7289.1478.566+0.170+0.28200000-0.107-0.214-0.214-0.21413.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.25016.

2、66215.80614.950+0.125+0.445000000-0.125-0.250-0.250-0.25020.95519.79318.631+0.142+0.541000000-0.142-0.284-0.284-0.28422.91121.74920.587+0.142+0.541000000-0.142-0.284-0.284-0.28426.44125.27924.117+0.142+0.541000000-0.142-0.284-0.284-0.28433.24931.77030.291+0.180+0.640000000-0.180-0.360-0.360-0.36041.

3、91040.43138.952+0.180+0.640000000-0.180-0.360-0.360-0.36047.80346.32444.854+0.180+0.640000000-0.180-0.360-0.360-0.36059.61458.13556.656+0.180+0.640000000-0.180-0.360-0.360-0.36075.18473.70572.226+0.217+0.640000000-0.217-0.434-0.434-0.43487.88486.40584.926+0.217+0.640000000-0.217-0.434-0.434-0.434100

4、.33098.85197.372+0.217+0.640000000-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55o）BSPT基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向螺纹代号大径中径小径基本最大最小基本最大最小位移偏差（ mm）R1/8289.7289.1478.5664.04.93.16.57.45.61.1R1/41913.15712.30111.4456.07.34.79.711.08.41.7R3/81916.66215.80614.9506.47.75.110.111.48.81.7R1/21420.95519.79318.6318.

5、210.06.413.215.011.42.3R3/41426.44125.27924.1179.511.37.714.516.312.72.3R1 1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4 1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2 1147.80346.32444.84512.715.010.419.121.416.82.9R2 1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2 ” X1175.18473.

6、70572.22617.521.014.026.730.223.23.5R3” X1187.88486.40584.92620.624.117.129.833.326.33.5R3.1/2 ” X11100.33098.85197.37222.225.718.731.434.927.93.5美制管螺纹基本尺寸及公差（牙形角 60o） UN(F)螺纹代号7/16 20UNF 1/2 20UNF 9/16 18UNF 3/4 16UNF 7/8 14UNF 1-1/16 12UN 1-5/16 12UN 1-5/8 12UN 1-7/8 12UN 2-1/2 12UN9/16 18UNF 11/1

7、6 16UN 13/16 16UN 1 14UNF 1-3/16 12UN 1-7/16 12UN 1-11/16 12UN 2 12UN5/8 18UNF 1-1/16 14UN外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC 螺纹11.07910.87410.25410.1479.5689.72810.03310.28710.42411.11312.66712.46111.84111.73211.15611.32811.60811.87512.01712.714.25214.03113.33513.22112.57312.75113.081

8、13.37113.5214.28819.01218.77317.98117.85417.1217.32317.67818.01918.18419.0522.18421.92321.00620.86920.02520.26920.67621.04621.22422.22526.94426.65525.5725.42524.42524.68925.14625.61325.80126.98833.29433.00531.9231.77330.77531.03931.49631.96332.15433.33841.22940.9439.88539.70538.7138.98939.44639.9014

9、0.09441.27547.57947.2946.20546.05345.0645.33945.79646.25146.44947.62563.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS 螺纹14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28817.42717.18816.39616.27415.53515.74816.10416.43116.58917.46320.59920.36119.56819.44418.70718.92319.27919.606

10、19.76620.63825.35725.09524.17824.03623.19523.44423.82524.22124.40725.430.11929.8328.74528.59827.627.86428.32128.78828.97930.16336.46736.17735.09334.94333.94734.21434.67135.13835.33136.51342.81742.52741.44341.2940.29740.56441.02141.48841.68642.86350.75450.46549.3849.22548.23548.51448.97149.42649.6275

11、0.8SAE 螺纹15.83915.61814.92314.80314.16114.35114.68114.95815.1115.87526.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16 16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8 12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.2252-1/4 12UN57.10456.81555.7355.5

12、7554.58554.86455.32155.77655.97657.15注： UNC 粗牙螺纹系列， UNF 细牙螺纹系列， UNEF 超细牙螺纹系列， UN 不变螺距系列布锥管螺纹基本尺寸及公差 (牙形角 60o)NPT螺纹代号基面上的直径螺纹长度大径中径小径有效长度管端至基面长Z1/8 2710.2729.5198.76674.572Z1/4 1813.57212.44311.3149.55.080Z3/8 1817.05515.92614.79710.56.096Z1/2 1421.22319.77218.32113.58.028Z3/4 1426.56825.11723.666148

13、.611Z1 11.533.22831.46129.69417.510.160Z1.1/4 11.541.98540.21838.4511810.688Z1.1/211.548.05446.28744.52018.510.688Z2 11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差 (牙形角 60o) M基本直径螺纹代号大径 中径 小径M10X1109.3508.917M12X11211.35010.917M14X11413.35012.917M12X1.251211.18810.647M14X1.251413.18812.647M12X1.51211.026

14、10.376M14X1.51413.02612.376M16X1.51615.02614.376M18X1.51817.02616.373M20X1.52019.02618.376M22X1.52221.02620.376M24X1.52423.02622.376M26X1.52625.02624.376M27X1.52726.02625.376M30X1.53029.02628.376M33X1.53332.02631.376M36X1.53635.02634.376M39X1.53938.02637.376M42X1.54241.02640.376M27X22725.70124.835M3

15、0X23028.70127.835M33X23331.70130.835M36X23634.70133.835M39X23937.70136.835M42X24240.70139.835M45X24543.70142.835M52X25250.70149.835M60X26058.70157.835M64X26462.70161.835M72X27270.70169.835内 螺 纹外螺纹公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差+0.150+0.236+0.190+0.300-0.026-0.0260000-0.138-0.206+0.160+0.236+0

16、.200+0.300-0.026-0.0260000-0.144-0.206+0.160+0.236+0.200+0.300-0.026-0.0260000-0.144-0.206+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0

17、.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0

18、.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032

19、-0.0320000-0.182-0.268+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280

20、+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.31855 圆锥管螺纹基本尺寸对照表最新下载 -汇兴达55 圆锥管螺纹基本尺寸对照表最新下载 -汇兴达55 圆锥管螺纹 (BSPT)螺纹基本尺寸大径螺距每英寸小中径径外mm牙型高度代号R1/16R1/8R1/4R3/8R1mm英寸 d=D1/17.76231/89.7281/413.1573/816.6621/220.955mmp0.9070.9071.3371.3371.814牙数tpi2828191914螺d2纹=Dd236.7.1542618.9.15476611.12.43014514.15.98065019.17938.H10.5810.5810.8560.8561.162/6231