unfとunjfの下穴の違い | オーエスジー

No : 467
公開日時 : 2019/02/26 18:10 更新日時 : 2022/06/09 11:25
answer
The pilot holes of the taps of the 467UNF and UNJF threads are different.
The UNJF for aerospace applications has a larger minor diameter (pilot hole).