英制螺纹尺寸公差表

英制螺纹尺寸公差表

单位：毫米

规格代号

名义直径 每英寸牙数

系列 等代号 级 UNF UNC UNF UNC UNF UNC UNF UNC UNF UNC UNF UNC UNF

螺距

外螺纹

外径

中径 1.3182 –0.033021.58242 –0.0508 1.59766 –0.03811.61036 –0.048261.6256 –0.035561.87452 –0.053341.88976 –0.040641.91262 –0.0508 1.92786 –0.0381 2.15392 –0.058422.1717 –0.043182.20218 –0.055882.21996 –0.040642.43332 –0.048262.48412 –0.060962.5019 –0.045722.7432 –0.066042.76352 –0.048262.7813 –0.06352.79908 –0.048262.96926 –0.071122.98958 –0.053343.0734 –0.066043.09372 –0.0508

内径 1.13538

小径 1.1811 +0.124461.1811 +0.12446

1.30556 –0.045721.12268

内螺纹

中径 1.3182 +0.058421.3182 +0.043181.59766 +0.066041.59766 +0.048261.6256 +0.06351.6256 +0.048261.88976 +0.071121.88976 +0.053341.92786 +0.068581.92786 +0.0508 2.1717 +0.076202.1717 +0.055882.21996 +0.071122.21996 +0.053342.43332 +0.083822.43332 +0.060962.5019 +0.078742.5019 +0.058422.76352 +0.083822.76352 +0.06352.79908 +0.081282.79908 +0.060962.98958 +0.093982.98958 +0.068583.09372 +0.086363.09372 +0.0635

大径

—80 （0#—80）—64 （1#—64）—72 （1#—72）—56 （2#—56）—64 （2#—64）—48 （3#—48）—56 （3#—56）—40 （4#—40）—48 （4#—48）—40 （5#—40）—44 （5#—44）—32 （6#—32）—40 （6#—40）

1.5113 –0.081281.5240 –0.08128 1.83896 –0.096521.8542 –0.096521.83896 –0.0889 1.8542 –0.0889 2.16916 –0.104142.1844 –0.104142.16916 –0.096522.1844 –0.096522.49682 –0.11432.5146 –0.11432.49682 –0.104142.5146 –0.104142.82448 –0.129542.8448 –0.129542.82702 –0.11432.8448 –0.11433.15468 –0.129543.175 –0.129543.15722 –0.121923.175 –0.12192

+0.15748+0.15748 +0.1397 +0.1397 +0.1778 +0.1778 +0.15748 +0.15748 +0.20574 +0.20574 +0.17272 +0.17272 +0.2286 +0.18796 +0.18796 +0.21082 +0.21082 +0.1905 +0.1905 +0.254 +0.254 +0.2032 +0.19304

2.413 –0.0635 +0.2286

–0.1524 –0.15243.48488 –0.129543.5052 –0.12954