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51问答网 > 谁知道英制螺纹7⼀16-20 UNF-2A 螺距谁多少?外径是多少？谢谢了

谁知道英制螺纹7⼀16-20 UNF-2A 螺距谁多少?外径是多少？谢谢了

2025-03-14 23:41:16

推荐回答（2个）

回答1：

查英制螺纹手册可得到。
大径：0.4375,；中径：0.4050-0.4104；小径：0.383-0.395，所有单位为inch。
换算就是乘以25.4后为mm。
螺距为：25.4/20=1.27mm

回答2：

这是美制细牙螺纹。7/16
是公称直径10.8737-11.0795
20
指的是螺距=25.4/20=1.27mm
螺纹山形60°

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