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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*11.560.09258.32556.55811.07419.21559.40040Z2.1/2*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，-
