常用螺纹规格尺寸表

SAE/MS直管螺纹螺纹尺寸（英寸）5/167/161/29/163/41-1/161-5/16螺纹牙数24202018161212基面上的螺纹直径大径7.93811.11312.714.28819.0526.98833.338中径7.24910.28711.87513.32518.01925.61331.963小径6.7929.73811.32512.55917.33124.69531.046牙型角60SAE/MS直管螺纹接头的允许压力额定值(316/螺不可定位位置可调型螺纹尺寸纹牙（英寸）psigMpapsigMpa数5/1624456831.5456831.57/1620456831.5456831.51/220456831.53626259/1618456831.53626253/416456831.53626251-1/16123626252900201-5/1612290020232016M公制直螺纹BSP、Rp、G、PF、BSPT锥管螺纹螺纹尺寸（英寸）1/161/81/43/81/25/83/47/811-1/81-1/41-1/21-3/42螺纹牙数2828191914141414111111111111基面上的螺纹直径大径7.7329.78213.15716.66220.95522.91126.44130.20133.24937.89741.9147.80353.74659.614中径7.1429.14712.30115.80619.79321.74925.27929.03931.7736.41840.43146.32452.26758.135小径6.5618.56611.45514.9518.63120.58724.11727.87730.29134.93938.95244.84550.78856.656牙型角螺纹尺寸（MM）M6M8M10M12M14M16M18M20M22M24M27M30M33M36螺纹牙数1基面上的螺纹直径牙型角大径68101214161820222427303336中径5.357.359.3511.0313.0315.0317.0319.0321.0323.0325.728.731.734.7小径4.9176.9178.91710.37612.37614.37616.37618.37620.37622.37624.83527.83530.83533.835551.5602NPT、Z锥管螺纹螺纹尺寸（英寸）1/161/81/43/81/23/411-1/41-1/22螺纹牙数27271818141411.511.511.511.5基面上的螺纹直径大径7.89410.24213.61617.05521.22426.56933.22841.98548.05460.092中径7.1429.48912.48715.92619.77225.11731.46140.21846.28758.325小径6.3988.73711.35814.79718.32123.66629.69438.45144.5256.558牙型角60BSP、R、R1、Rc，ZG、RT、PT、BSPT锥管螺螺基面上的螺纹直径螺纹尺寸纹牙型角牙（英寸）大径中径小径数1/16287.7237.1426.5611/8289.7289.1478.5661/41913.15712.311.4453/81916.66215.8114.951/21420.99519.7918.631553/41426.44125.2824.11711133.24931.7730.2911-1/41141.9140.4338.9521-1/21147.80346.3244.84521159.64158.1456.656