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m10*1109.358.9170,+0.1500,+0.2360,+0.1900,+0.300-0.026,-0.138-0.026,0.206m12*11211.3510.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,0.206m14*11413.35122.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,0.206m12*1.251211.18810

2、.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240m14*1.251413.18812.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240m12*1.51211.02610.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268m14*1.51413.02612.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268

3、m16*1.51615.02614.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268m18*1.51817.02616.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268m20*1.52019.02618.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268m22*1.52221.02620.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.

4、172-0.032,-0.268m24*1.51423.02622.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m26*1.52625.02624.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m27*1.52726.02625.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m30*1.53029.02628.3760,+0.2000,+0.3000,+0.2500,

5、+0.375-0.032,-0.182-0.032,-0.268m33*1.53332.02631.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m36&1.53635.02634.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m39*1.53938.02637.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m42*1.54241.02640.3760,+0.2000,

6、+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268m27*22725.70124.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m30*23028.70127.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m33*23331.70130.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m36*23634.70133.8350,

7、+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m39*23937.70136.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m42*24240.70139.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m45*24543.70142.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318m52*25250.701

8、49.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318m60*26058.70157.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318m64*26462.70161.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318m72*27270.70169.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318美制nps

9、m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021/8-27npsm10.0849.9069.4629.3709.0939.2469.4899.609041/4-18npsm13.36013.13212.45412.34211.88712.21712.48712.634063/8-18npsm 16.81516.58615.89015.77615.31615.54515.92616.076081/2-14npsm20.90420.65019.73319.60418.

10、97419.27919.77119.942123/4-14npsm26.26426.01025.07724.94324.33324.63825.11825.293161-11.5npsm32.84232.53731.41731.27030.50530.75931.46031.653201.1/4-11.5npsm41.60541.30040.17340.02039.26839.49740.21840.416241.1/2-11.5npsm47.67647.37146.24146.08645.33945.56846.28646.487322-11.5npsm59.71559.41158.2785

11、8.12057.37957.60758.32658.532402.1/2-8npsm72.16171.78070.10469.91668.78369.26670.16070.409483-8npsm88.06287.68186.00985.81684.68485.16686.06886.319npt布锥管螺纹标号螺纹代号 基面上的直径螺纹长度端面大径大径中径小径管端至基面长有效长度02z1/8*2710.2429.4898.7364.1026.7039.98604z1/4*1813.61612.48711.3855.78610.20613.25406z3/8*1817.05515.92614.

12、7976.09610.35816.67408z1/2*1421.22319.77218.3218.12813.55620.71512z3/4*1426.56825.11723.6668.61113.86126.03016z1*11.533.22831.46129.69410.16017.34332.59320z1.1/4*1.541.98540.21838.45110.66817.95341.31824z1.1/2*11.548.05446.28744.52010.66818.37747.38732z2*11.560.09258.32556.55811.07419.21559.40040z2.

13、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02g1/8*289.7289.1478.5660.170，00.282，00，-0.1700，-0.2140，-0.2140，-0.21404g1/4*1913.15712.30111.4450.125，00.445，00.-0.1250，-0.2500，-0.2500，-0.25006g3/8*1916.66

14、215.80614.9500.125，00.445，00，-0.1250，-0.2500，-0.2500，-0.25008g1/2*1420.95519.79318.6310.142，00.541，00，-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，-0.28416g1*1133.24931.77030.

15、2910.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36020g1.1/4*1141.91040.43138.9520.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36024g1.1/2*1147.80346.32444.8450.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36032g2*1159.61458.13556.6560.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36040g2.1/2*1175.18473.70572.2260

16、.217，00.640，00，-0.2170，-0.4340，-0.4340，-0.43448g3*1187.88486.40584.9260.217，00.640，00，-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的极限偏差端面大径大径中径小径基本最大最小基本最大最小02r1/8*289.7289.1478.56644.93.16.57.45.61.19.47804r1/4*1913.15712.30111.44567.34.79.7118.41.712.78206r3/8*1916.66215

17、.80614.9506.47.75.110.111.48.81.716.26208r1/2*1420.95519.79318.6318.2106.413.21511.42.320.44312r3/4*1426.44125.27924.1179.511.37.714.516.312.72.325.84716r1*1133.24931.77030.29110.412.78.116.819.114.52.932.59920r1.1/4*1141.91040.43138.95212.71510.419.121.416.82.941.11624r1.1/2*1147.80346.32444.84512.

18、71510.419.121.416.82.947.00932r2*1159.61458.13556.65615.918.213.623.425.721.12.958.62040r2.1/2*1175.18473.70572.22617.5211426.730.223.23.574.09048r3*1187.88486.40584.92620.624.117.129.833.326.33.586.597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大径最小最大最小最大最小最小最大最小最大jic螺纹025/1624unf7.9107.7277.2217.1276.

19、6506.7827.0367.2497.3717.938033/8*24unf9.4979.3148.8098.7128.2378.3828.6368.8378.9619.525047/16*20unf11.07910.87410.25410.1479.5689.72810.03310.28710.42411.113051/2*20unf12.66712.46111.84111.73211.15611.32811.60811.87512.01712.7069/16*18unf14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2880

20、83/4*16unf19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05107/8*14unf22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225121.1/16*12unf26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988161.5/16*12unf33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338201.5/8*12unf41

21、.22940.9439.85539.70538.7138.98939.44639.90140.09441.275241.7/8*12unf47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625322.1/2*12unf63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5403812unf76.15775.86274.77874.61873.63273.91474.37174.82675.03476.218hk1.1/2*10unf38.05237.72436.40136.

22、23835.02935.35735.89036.44936.66038.100orfs螺纹049/16*18unf14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2880611/16*16unf17.42717.18816.39616.27415.53515.74816.10416.43116.58917.4630813/16*16unf20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638101*14unsf25.35725.09524.17824.03623.1

23、9523.44423.82524.22124.40725.4121.3/16*12un30.11929.8328.75428.59827.627.86428.32128.78828.97930.163161.7/16*12un36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513201.11/16*12un42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863242*12un50.75450.46549.3849.2548.23548.51448.97149.426

24、49.62750.8sae螺纹065/818unf15.83915.61814.92314.80314.16114.35114.68114.95815.1115.875121.1/16*14unf26.94726.683 25.74325.60824.7424.96825.37525.78325.96126.987其他美制螺纹9/16*16un14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8*12un22.18221.89220.80820.66819.66219.93920.39620.85121.03422.225

25、2.1/4*12un57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15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*327.1206.9676.6046.5236.1756.2946.4726.6296.7367.145r5-0546/127*289.1979.0328.6088.5168.1158.2348.4638.6368.7539.225r5-06107/254*2810.68510.52010.09510.0049.6039.

26、7359.93810.12310.24010.713r5-089/16*2414.25714.07413.56913.47012.99713.13213.38613.59913.72914.288r5-1011/16*2417.43217.24916.74416.64216.17216.30716.56116.77416.90617.463r5-1213/16*2020.59920.39919.77919.66719.34719.25319.55819.81219.98220.638r5-161.1/16*1826.95226.73126.03525.91625.27325.45125.781

27、26.07126.22826.988r5-201.5/16*1833.29933.07832.38232.25831.62031.80132.13132.42132.58133.338r5-241.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.688r5-322*1850.76250.54149.84549.71549.08349.27649.60649.88350.05350.8002a-047/16*2011.07910.87410.25410.1479.5689.72810.03310.28710.4241

28、1.1132a-069/16*1814.25214.03113.33513.22112.57312.75113.08113.37113.52014.2882a-085/8*1815.83915.61814.92314.80314.16114.35114.68114.95815.11015.8752a-103/4*1819.01418.79318.09817.98117.33617.52617.85618.13318.28519.0502a-127/8*1822.18921.96821.27321.15620.51120.70121.03121.30821.46022.2252a-161.3/16*1630.12429.87029.09328.96428.23228.44828.80429.13129.29930.1632a-201.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.688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+