常用螺纹尺寸.doc

1 公制螺纹基本尺寸及公差（牙形角60 ）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M10x1109.3508.9170,+0.1500,+0.2360,+0.1900,+0.300-0.026,-0.138-0.026,-0.206M12x11211.35010.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,-0.206M14x11413.35012.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,-0.206M12x1.251211.18810.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240M14x1.251413.18812.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240M12x1.51211.02610.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M14x1.51413.02612.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M16x1.51615.02614.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M18x1.51817.02616.3730,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M20x1.52019.02618.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M22x1.52221.02620.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268M24x1.52423.02622.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M26x1.52625.02624.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M27x1.52726.02625.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M30x1.53029.02628.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M33x1.53332.02631.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M36x1.53635.02634.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M39x1.53938.02637.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M42x1.54241.02640.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268M27x22725.70124.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M30x23028.70127.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M33x23331.70130.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M36x23634.70133.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M39x23937.70136.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M42x24240.70139.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M45x24543.70142.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318M52x25250.70149.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318M60x26058.70157.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318M64x26462.70161.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318M72x27270.70169.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.3182 布锥管螺纹基本尺寸及公差（牙形角60 ）NPT, Z螺纹代号基面上的直径螺纹长度端面大径标号大径中径小径管端至基面长有效长度-02Z1/8x2710.2429.4898.7364.1026.7039.986-04Z1/4x1813.61612.48711.3855.78610.20613.254-06Z3/8x1817.05515.92614.7976.09610.35816.674-08Z1/2x1421.22319.77218.3218.12813.55620.715-12Z3/4x1426.56825.11723.6668.61113.86126.030-16Z1x11.533.22831.46129.69410.16017.34332.593-20Z1.1/4x11.541.98540.21838.45110.66817.95341.318-24Z1.1/2x11.548.05446.28744.52010.66818.37747.387-32Z2x11.560.09258.32556.55811.07419.21559.400-40Z2.1/2”x872.69970.15967.61917.32328.89271.616-48Z3”x888.60886.06883.52819.45630.48087.3923 55英管螺纹基本尺寸及公差（牙形角55 ）G,PF,K,BSPP基本直径内螺纹外螺纹公差等级公差等级标号螺纹代号中径小径AB大径中径小径公差公差中径公差大径公差中径公差大径公差-02G1/8”x289.7289.1478.566+0.170，0+0.282，00，-0.1070，-0.2140，-0.2140，-0.214-04G1/4”x1913.15712.30111.445+0.125，0+0.445，00，-0.1250，-0.2500，-0.2500，-0.250-06G3/8”x1916.66215.80614.950+0.125，0+0.445，00，-0.1250，-0.2500，-0.2500，-0.250-08G1/2”x1420.95519.79318.631+0.142，0+0.541，00，-0.1420，-0.2840，-0.2840，-0.284-10G5/8”x1422.91121.74920.587+0.142，0+0.541，00，-0.1420，-0.2840，-0.2840，-0.284-12G3/4”x1426.44125.27924.117+0.142，0+0.541，00，-0.1420，-0.2840，-0.2840，-0.284-16G1”x1133.24931.77030.291+0.180，0+0.640，00，-0.1800，-0.3600，-0.3600，-0.360-20G1.1/4”x1141.91040.43138.952+0.180，0+0.640，00，-0.1800，-0.3600，-0.3600，-0.360-24G1.1/2”x1147.80346.32444.845+0.180，0+0.640，00，-0.1800，-0.3600，-0.3600，-0.360-32G2”x1159.61458.13556.656+0.180，0+0.640，00，-0.1800，-0.3600，-0.3600，-0.360-40G2.1/2”X1175.18473.70572.226+0.217，0+0.640，00，-0.2170，-0.4340，-0.4340，-0.434-48G3”X1187.88486.40584.926+0.217，0+0.640，00，-0.2170，-0.4340，-0.4340，-0.4344 55英锥管螺纹基本尺寸及公差（牙形角55 ）R（外）, Rc(内), PT, BSPT, ZG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-02R1/8x289.7289.1478.5664.04.93.16.57.45.61.19.478-04R1/4x1913.15712.30111.4456.07.34.79.711.08.41.712.782-06R3/8x1916.66215.80614.9506.47.75.110.111.48.81.716.262-08R1/2x1420.95519.79318.6318.210.06.413.215.011.42.320.443-12R3/4x1426.44125.27924.1179.511.37.714.516.312.72.325.847-16R1x1133.24931.77030.29110.412.78.116.819.114.52.932.599-20R1.1/4x1141.91040.43138.95212.715.010.419.121.416.82.941.116-24R1.1/2x1147.80346.32444.84512.715.010.419.121.416.82.947.009-32R2x1159.61458.13556.65615.918.213.623.425.721.12.958.620-40R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.23.574.090-48R3”X1187.88486.40584.92620.624.117.129.833.326.33.586.597注：内锥螺纹表示方法为：Rc，如Rc1。5 美制螺纹基本尺寸及公差（牙形角60）UN, UNF外螺纹内螺纹标号螺纹代号公差等级 2A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JIC螺纹，用于74锥密封-025/16”X24UNF7.9107.7277.2217.1276.6506.7827.0367.2497.3717.938-033/8”X24UNF9.4979.3148.8098.7128.2378.3828.6368.8378.9619.525-047/16x20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.113-051/2x20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.7-069/16x18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288-083/4x16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05-107/8x14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225-121.1/16x12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988-161.5/16x12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338-201.5/8x12UN41.22940.9439.85539.70538.7138.98939.44639.90140.09441.275-241.7/8x12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625-322.1/2x12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5-403”x12UN76.15775.86274.77874.61873.63273.91474.37174.82675.03476.2ORFS螺纹，用于平面O-RONG密封-049/16x18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288-0611/16x16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.463-0813/16x16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638-101x14UNSf25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4-121.3/16x12UN30.11929.8