螺
纹
规 格
es 上偏差ei 下偏差d2es 上偏差ei 下偏差D1ES 上偏差EI 下偏差D2ES 上偏差EI 下偏差M5
-0.024-0.174 4.48-0.024-0.119 4.1340.250 4.480.160M6
-0.026-0.206 5.35-0.026-0.138 4.9170.30 5.350.190M8
-0.028-0.247.188-0.028-0.146 6.6470.33507.1880.20M10*1
-0.026-0.2069.35-0.026-0.1388.9170.309.350.190M10
-0.032-0.2689.026-0.032-0.1648.3760.37509.0260.2240M12*1
-0.026-0.20611.35-0.026-0.14410.9170.3011.350.20M14*1.5
-0.032-0.26813.026-0.032-0.17212.3760.375013.0260.2360M16*1.5
-0.032-0.26815.026-0.032-0.17214.3760.375015.0260.2360M18*1.5
-0.032-0.26817.026-0.032-0.17216.3760.375017.0260.2360M20*1.5
-0.032-0.26819.026-0.032-0.17218.3760.375019.0260.2360M20*1
-0.026-0.20619.35-0.026-0.14418.9170.3019.350.20M22*1.5
-0.032-0.26821.026-0.032-0.17220.3760.375021.0260.2360M22*1
-0.026-0.20621.35-0.026-0.14420.9170.3021.350.20M24*1.5
-0.032-0.26823.026-0.032-0.18222.3760.375023.0260.250M24*1
-0.026-0.20623.35-0.026-0.15122.9170.3023.350.2120M27*1.5
-0.032-0.26826.026-0.032-0.18225.3760.375026.0260.250M28*1.5
-0.032-0.26827.026-0.032-0.18226.3760.375027.0260.250M30*1.5
-0.032-0.26829.026-0.032-0.18228.3760.375029.0260.250M32*1.5
-0.032-0.26831.026-0.032-0.18230.3760.375031.0260.250M33*1.5
-0.032-0.26832.026-0.032-0.18231.3760.375032.0260.250M36*1.5
-0.032-0.26835.026-0.032-0.18234.3760.375035.0260.250M37*1.25
-0.028-0.2436.188-0.028-0.15535.6470.335036.1880.2310M37*1.5
-0.032-0.26836.026-0.032-0.18235.3760.375036.0260.250M38*1.5
-0.032-0.26837.026-0.032-0.18236.3760.375037.0260.250M39*1.5
-0.032-0.26838.026-0.032-0.18237.3760.375038.0260.250M40*1.5
-0.032-0.26839.026-0.032-0.18238.3760.375039.0260.250M42*1.25
-0.028-0.2441.188-0.028-0.15540.6470.335041.1880.2310M42*1.5
-0.032-0.26841.026-0.032-0.18240.3760.375041.0260.250M42*2
-0.038-0.31840.701-0.038-0.20837.8350.475040.7010.280M45*1.5
-0.032-0.26844.026-0.032-0.18243.3760.375044.0260.250M48*1.5
-0.032-0.26847.026-0.032-0.19246.3760.375047.0260.2650M50*1.5-0.032-0.26849.026-0.032-0.19248.3760.375049.0260.2650未特别注明时，毛坯尺寸公差取值应遵循“轴取上偏差，孔取下偏差，长度尺寸取基本尺寸或最靠近基本尺寸的偏差”的原则。
在正常情况下，内螺纹小径=公称直径-螺距
外螺纹应取下偏差，最大值不得大于公差带中心；内螺纹应取上偏差，最小值不得小于公差带中心；
未特别注明时，机械加工尺寸公差取值应遵循“轴取下偏差，孔取上偏差，长度尺寸取基本尺寸或最靠近基本尺寸的偏差”的原则。
常见螺纹及公差
（仅限IQC内部使用不得向外传阅）
外 螺 纹内 螺 纹外 径中 径小 径中 径。