rc1⼀8管螺纹孔钻多大

2024-11-09 00:34:14
推荐回答(1个)
回答1:

Rc1/8是60锥管内螺纹,锥比1:16,打孔8.7mm,内螺纹大径9.7mm牙深约1mm,
28牙/英吋,合螺距25.4/28=0.907mm,丝长6.7mm给采啊!!!!!!