各国标准螺纹基本尺寸对照表.docx

1、各国标准螺纹基本尺寸对照表英制管螺纹基本尺寸及公差（牙形角550 ）螺纹代号基本直径内螺纹外螺纹大径中径小径中径公差小径公差A级B级中径公差大径公差中径公差大径公差+0.2820000G1/8 ”X 289.7289.1478.566+0.1700-0.107-0.214-0.214-0.214G1/4 ”X 1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250+0.125+0.4450000G3/8 X 1916.66215.80614.95000-0.125-0.250-0.250-0.250+0.142+0.5410000G1

2、/2 X 1420.95519.79318.63100-0.142-0.284-0.284-0.284+0.142+0.5410000G5/8 X 1422.91121.74920.58700-0.142-0.284-0.284-0.284+0.142+0.5410000G3/4 X 1426.44125.27924.11700-0.142-0.284-0.284-0.284+0.180+0.6400000G1X 1133.24931.77030.29100-0.180-0.360-0.360-0.360+0.180+0.6400000G1.1/4 X 1141.91040.43138.952

3、00-0.180-0.360-0.360-0.360+0.180+0.6400000G1.1/2X 1147.80346.32444.85400-0.180-0.360-0.360-0.360+0.180+0.6400000G2 X 1159.61458.13556.65600-0.180-0.360-0.360-0.360+0.217+0.6400000G2.1/2” X1175.18473.70572.22600-0.217-0.434-0.434-0.434G3+0.217+0.6400000X1187.88486.40584.92600-0.217-0.434-0.434-0.434+

4、0.217+0.6400000G3.1/2” X11100.33098.85197.37200-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角 55o） BSPT螺纹代号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位移偏差（士 mr）i大径中径小径基本最大最小基本最大最小R1/8 X 289.7289.1478.5664.04.93.16.57.45.61.1R1/4 X 1913.15712.30111.4456.07.34.79.711.08.41.7R3/8 X 1916.66215.80614.9506.47.75.110.111.48.81.7

5、R1/2 X 1420.95519.79318.6318.210.06.413.215.011.42.3R3/4 X 1426.44125.27924.1179.511.37.714.516.312.72.3R1 X 1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4 X 1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2X 1147.80346.32444.84512.715.010.419.121.416.82.9R2 X 1159.61458.13556.65615.918.21

6、3.623.425.721.12.9R2.1/2 ” X1175.18473.70572.22617.521.014.026.730.223.23.5R3” 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7/16X 20UNF11.07910.87410.254

7、10.1479.5689.72810.03310.28710.42411.1131/2X 20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.79/16 X 18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2883/4 X 16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.057/8 X 14UNF22.18421.92321.00620.86920.02520.26920.67

8、621.04621.22422.2251-1/16X 12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.9881-5/16X 12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.3381-5/8 X 12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.2751-7/8 X 12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.62

9、52-1/2 X 12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺纹9/16 X 18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28811/16X 16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.46313/16X 16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.6381X 14UNF25.

10、35725.09524.17824.03623.19523.44423.82524.22124.40725.41-3/16X 12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.1631-7/16X 12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.5131-11/16 X 12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.8632X 12UN50.75450.46549.3849.2254

11、8.23548.51448.97149.42649.62750.8SAE螺纹5/8 X 18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.8751-1/16X 14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16 X 16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8 X 12UN22.18221.89220.80820.66819.66219.93

12、920.39620.85121.03422.2252-1/4 X 12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15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 X 2710.2729.5198.76674.572Z1/4 X 1813.57212.44311.3149.55.080Z3/8 X 1817.05515.92614.79710.56.096Z1/2 X

13、 1421.22319.77218.32113.58.028Z3/4 X 1426.56825.11723.666148.611Z1 X 11.533.22831.46129.69417.510.160Z1.1/4 X 11.541.98540.21838.4511810.688Z1.1/2 X 11.548.05446.28744.52018.510.688Z2 X 11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差（牙形角60o） M螺纹代号基本直径内螺纹外螺纹大径中径小径公差等级公差等级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M10X1

14、109.3508.917+0.150+0.236+0.190+0.300-0.026-0.0260000-0.138-0.206M12X11211.35010.917+0.160+0.236+0.200+0.300-0.026-0.0260000-0.144-0.206M14X11413.35012.917+0.160+0.236+0.200+0.300-0.026-0.0260000-0.144-0.206M12X1.251211.18810.647+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240M14X1.251413.18812.6

15、47+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240M12X1.51211.02610.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M14X1.51413.02612.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M16X1.51615.02614.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M18X1.51817.02616.373+0.190

16、+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M20X1.52019.02618.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M22X1.52221.02620.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268M24X1.52423.02622.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M26X1.52625.02624.376+0.200+0.300+0

17、.250+0.375-0.032-0.0320000-0.182-0.268M27X1.52726.02625.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M30X1.53029.02628.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M33X1.53332.02631.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M36X1.53635.02634.376+0.200+0.300+0.250+0.3

18、75-0.032-0.0320000-0.182-0.268M39X1.53938.02637.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M42X1.54241.02640.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M27X22725.70124.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M30X23028.70127.835+0.224+0.375+0.280+0.475-0.038-0.0

19、380000-0.208-0.318M33X23331.70130.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M36X23634.70133.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M39X23937.70136.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M42X24240.70139.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.3

20、18M45X24543.70142.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M52X25250.70149.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318M60X26058.70157.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318M64X26462.70161.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318M72X27270.7016

21、9.835+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 代 号基本尺寸英寸大径mmd=D螺距mmP每英寸牙 数tpi中径mmd2=D2小径外螺纹d3牙型高度H1R6.11/17.70.97.15/62307284260.581116 1R8.11/89.70.9289.150.581/II280747686R11/413.1.31912.1.0.8561II157373014/4451R4.33/816.1.31915.90.856/II662378065801R8.11/220.1.81419.61.162/II95514793JF32* 12R4.33/426.1.825.1411.162/II441141279147k3