螺纹中径对照表

1、公制螺纹基本直径内螺纹公差等级外螺纹公差时间:2021.03. 04创 作： 欧阳地大径中径小径6H7H6G中径公差小径公 差中径公0,差小径公 差中径公 差小径公差M1O*1109.358.9170.+0.1500.+0.2360.+0.1900.+0.300-0.026,0.138-0.026.0.206M12*l1211.3510.9170.+0J600.+0.2360.+0.2000.+0.3000.026厂 044-0.026.0.206M14*l1413.35122.9170.+0.1600,+0.2360.+0.2000.+0.3000.026.0.144-0.026.0.206

2、M12*1.251211.18810.6470.+0.1800.+0.2650.+0.224O.+O.335-0.028,-060-0.028r0.240M14*1.251413.18812.6470.+0.1800.+0.2650.+0.224O.+O.335-0.028.-0.160-0.02&. 0.240M12*1.51211.02610.3760.+0.1900.+0.3000,+0.2360,+0375-0.032,0.1720.032厂0.268M14*1.51413.02612.3760.+0J900.+0.3000.+0.2360.+0.3750.032,-0.1720.03

3、2厂0.268M16*1.51615.02614.3760.+0.1900.+0.3000.+0.2360.+0.375-0.032, 0.1720.032厂0.268M18*1.51817.02616.3760.+0.1900.+0.3000.+0.2360.+0.3750.032,0.1720.032厂0.268M2O*1.52019.02618.3760.+0J900.+0.3000.+0.2360.+0.375-0.032,-0.1720.032厂0.268M22*1.52221.02620.3760.+0.1900.+0.3000,+0.2360,+0375-0.032,0.1720

4、.032厂0.268M24*1.51423.02622.3760.+0.2000.+0.3000.+0.2500.+0.375-0.032,-0.1820.032厂0.268M26*1.52625.02624.3760.+0.2000.+0.3000.+0.2500.+0.3750.032,0.1820.032厂0.268M27*1.52726.02625.3760.+0.2000.+0.3000,+0.2500,+0.3750.032,0.1820.032厂0.268M3O*153029.02628.3760.+0.2000.+0.3000.+0.2500.+0.375-0.032,- 0.

5、1820.032厂0.268M33*1.53332.02631.3760.+0.2000.+0.3000,+0250O.+O.3750.032,-0.1820.032厂0.268M36&1.53635.02634.3760.+0.2000.+0.3000.+0.2500.+0.375-0.032,0.1820.032厂0.268M39*1.5393&02637.3760.+0.2000.+0.3000.+0.2500.+0.3750.032,- 0.1820.032厂0.268M42*1.54241.02640.3760.+0.2000.+0.3000.+0.2500,+0375-0.032.

6、0.1820.032厂0.268M27*22725.70124.8350.+0.2240,+0.3750.+0.2800.+0.475-0.03&0.2080.03&0.318M3O*23028.70127.8350.+0.2240.+0.3750.+0.2800.+0.4750.03&0.2080.03&0.318M33*23331.70130.8350.+0.2240,+0.3750.+0.2800.+0.475-0.03&0.208003&0.318M36*23634.70133.8350.+0.2240.+0.3750.+0.2800.+0.4750.03&0.2080.03&0.31

7、8M39*23937.70136.8350,+0.2240.+0.3750.+0.2800.+0.4750.03&0.2080.038厂0.318M42*24240.70139.8350.+0.2240.+0.3750.+0.2800.+0.4750.03&0.2080.038厂0.318M45*24543.70142.8350.+0.2240.+0.3750,+0.2800.+0.4750.03&0.208003&0.318M52*25250.70149.8350.+0.2360.+0.3750.+0.3000.+0.4750.03&0.218-O.O38r0.318M60*26058.70

8、157.8350.+0.2360.+0.3750.+0.3000.+0.4750.030.218-0.038厂0.318M64*26462.70161.8350.+0.2360.+0.3750.+0.3000.+0.4750.03&0.218-0.038厂0.318M72*27270.70169.8350.+0.2360,+0.3750.+0.3000.+0.475-0.03&0.218003&0.318美制NPSM螺纹（美国标准ANSI B1.20. 1机械连接用直管螺纹60度）标号螺纹代号外螺纹（2A级）内螺纹（2B级）大径中径小径中径最大值最小值最大值最小值最小值最大值最小值最大值021

9、/8-27NPSM10.0849.9069.46293709.0939.2469.4899.609041/4-18NPSM13.36013.13212.4541234211.88712.21712.48712.634063/8-18NPSM16.81516.58615.89015.7761531615.54515.92616.076081/2-14NPSM20.90420.65019.73319.6041&97419.27919.77119.942123/4-14NPSM26.26426.01025.07724.94324.33324.63825.11825.29316M1.5NPSM32.8

10、4232.53731.41731.27030.50530.75931.46031.653201.1/4-11.5NPSM41.60541.30040.17340.02039.26839.49740.21840.416241/2-11.5NPSM47.67647.37146.24146.08645.33945.56846.28646.487322-11.5NPSM59.71559.41158.27858.1205737957.60758.32658.532402.1/2-8NPSM72.16171.78070.10469.91668.78369.26670.16070.409483-8NPSM8

11、8.06287.68186.00985.81684.68485.16686.06886.319NPT布锥管螺纹标号螺纹代号基而上的直径螺纹长度端而大径大径中径小径管端至基而长有效长度02Z1/8 *2710.2429.4898.7364.1026.7039.98604Zl/4*1813.61612.48711.3855.78610.20613.25406Z3/8*1817.05515.92614.7976.09610.35816.67408Zl/2*1421.22319.77218.3218.12813.55620.71512Z3/4*I426.56825.11723.666&61113.86

12、126.03016ZP11.533.22831.46129.69410.16017.34332.59320Zll/4*1541.98540.21838.45110.66817.95341.31824Zl.1/2*11.548.05446.28744.52010.66818.3774738732Z2*11.560.09258.32556.55811.07419.21559.40040Z2.1/2*872.69970.15967.61917.32328.89271.61648Z3*888.60886.06883.52819.45630.48087.39255度英锥管螺纹标号螺纹代号基本直径内螺纹外

13、螺纹大径中径小径中径公差小径公差公差等级AB中径公差大径公差中径公差大径公差02Gl/8*289.7289478.5660.170, 00.282, 00, -0.1700, -0.2140, -0.2140, -0.21404Gl/4*1913.15712.30111.4450.125, 00.445, 00.-0.1250, -0.2500, -0.2500, -0.25006G3/8*1916.66215.80614.9500.125, 00.445, 00, -0.1250, -0.2500, -0.2500, -0.25008Gl/2*1420.95519.79318.6310.14

14、2, 00.541, 00, -0.1420, -0.2840, -0.2840, -0.28410G5/8*1422.91121.74920.5870.142, 00.541, 00, -0.1420, -0.2840, -0.2840, -0.28412G3/4*1426.44125.27924.1170.142, 00.541, 00, -0.1420, -0.2840, -0.2840, -0.28416Gl*ll33.24931.77030.2910.180, 00.640, 00, -0.1800, -03600, -0.3600, -0.36020Gl.1/4*1141.9104

15、0.43138.9520.180, 00.640, 00, -0.1800, -03600, -0.3600, -0.36024Gl.1/2*1147.80346.32444.8450.180, 00.640, 00, -0.1800, -03600, -0.3600, -0.36032G2*ll59.61458.13556.6560.180, 00.640, 00, -0.1800, -03600, -0.3600, -0.36040G2.1/2*ll75.18473.70572.2260.217, 00.640, 00, -0.2170, -0.4340, -0.4340, -0.4344

16、8G3*ll87.88486.40584.9260.217, 00.640, 00, -0.2170, -0.4340, -0.4340, -0.43455度英锥管螺纹标号螺纹代号基而上的直径基准长度有效螺纹长度圆锥内螺纹 基而轴向位 移的极限偏 差端而大径大径中径小径基本最大最小基本最大最小02R 1/8*289.7289.1478.56644.93.16.57.45.61.19.47804Rl/4*1913.15712.30111.44567.34.79.7118.41.712.78206R3/8*1916.66215.80614.9506.47.7510.111.48.81.716.26

17、208Rl/2*1420.95519.79318.6318.2106.413.21511.42.320.44312R3/4*1426.44125.27924.1179.511.37.714.516.312.72.325.84716Rl*ll33.24931.77030.29110.412.78.116.819.114.52.932.59920Rl.1/4*1141.91040.43138.95212.71510.419.121.416.82.941.11624Rl.1/2*1147.80346.32444.84512.71510.419.121.416.82.947.00932R2*ll59.

18、61458.13556.65615.91&213.623.425.721.12.958.62040R2.1/2*ll75.18473.70572.22617.5211426.730.223.23.574.09048R3*ll87.88486.40584.92620.624.117.129.833326.33.586.597美制螺纹标号螺纹代号外螺纹内螺纹公差等级2A公差等级2B大径中径小径 最大小径中径最大最小最大最小最小最大最小最大JIC螺纹025/16X24UNF7.9107.7277.2217.1276.6506.7827.0367.2497.3717.938033/8*24UNF9.4

19、979.3148.8098.7128.2378.382&6368.8378.9619.525047/16*20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.11305l/2*20UNF12.66712.46111.84111.73211.1561132811.60811.87512.01712.7069/16*18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28乞083/4*16UNF19.01218.77317.98117.85417.1217.32

20、317.6781&01918.18419.05107/8*14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.22f121.1/16*12UNF26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988161.5/16*12UNF33.29433.00531.9231.77330.77531.03931.49631.96332.15433.33乞201.5/8*12UNF41.22940.9439.85539.70538.7138.98939.44639.9014

21、0.09441.27f241.7/8*12UNF47.57947.2946.20546.05345.0645.33945.79646.25146.44947.62f322.1/2*12UNF63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5403812UNF76.15775.86274.77874.61873.63273.91474.37174.82675.03476.218HKl.l/2*10UNF38.05237.72436.40136.23835.02935.35735.89036.44936.6603&10(ORFS螺纹0

22、49/16*18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2880611/16*16UNF17.42717.18816.39616.27415.53515.74816.10416.43116.58917.4620813/16*16UNF20.59920.36119.56819.44418.7071&92319.27919.60619.76620.63乞10P14UNSF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4121.3/16*12UN30.11

23、929.8328.75428.59827.627.86428.32128.78828.97930.162161.7/16*12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.5122011/16*12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863242*12UN50.75450.465493849.2548.2354&51448.97149.42649.62750.8SAE螺纹065/8x18UNF15.83915.61814.92314.80314

24、.16114.35114.68114.95815.1115.87f121.1/16*14UNF26.94726.68325.74325.60824.7424.9682537525.78325.96126.98；其他美制螺纹9/16*16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8*12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.22f2.1/4*12UN57.10456.81555.7355.57554.58554.8645532155.

25、77655.97657.15可拆式芯子与套筒连接螺纹软管编号螺纹代号外螺纹内螺纹公差等级2B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R5-049/32*327.1206.9676.6046.5236.1756.2946.4726.6296.736745R5-0546/127*289.1979.032&6088.516&1158.234&463&636&7539.225R5-06107/254*2810.68510.52010.09510.0049.6039.7359.93810.12310.24010.712R5-089/16*2414.25714.07413.56913.47

26、012.99713.13213.38613.59913.72914.2炎R5-1011/16*2417.43217.24916.74416.64216.17216.30716.56116.77416.90617.463R5-1213/16*2020.59920.39919 力 919.66719.34719.25319.55819.81219.98220.63乞R5-161.1/16*1826.95226.73126.03525.91625.27325.45125.78126.07126.22826.98R5-201.5/16*1833.29933.07832.38232.25831.6203

27、1.80132.13132.42132.58133.33R5-241.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.68乞R5-322*1850.76250.54149.84549.71549.08349.27649.60649.88350.0535O.8OC2A-047/16*2011.07910.87410.25410.1479.5689.72810.03310.28710.42411.1132A-069/16*1814.25214.03113.33513.22112.57312.75113.08113.37

28、113.52014.2炎2A-085/8*1815.83915.61814.92314.80314.16114.35114.68114.95815.11015.87f2 A-103/4*1819.0141&7931&09817.98117.33617.52617.85618.13318.28519.05C2A-127/8*1822.18921.96821.27321.15620.51120.70121.03121.30821.46022.22f2A-161.3/16*1630.12429.87029.09328.96428.23228.44828.80429.13129.29930.1632A-201.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.68乞新西兰B09内螺纹标号你螺纹代号 大径MIN中径MIN 中径MAX 小径MIN 小径MAXB-090.860in*1421.84420.68320.84119.522NPTF+密封管螺纹标号螺纹代号外螺纹 大端中 径外螺纹