オーバサイズ 転造タップの下穴径 | オーエスジー

No : 564
公開日時 : 2024/10/22 00:00 更新日時 : 2025/04/17 07:25
answer

forming tap makes the Pilot hole bigger as it grows.
Since the RH number is +0.013mm for every 1 increase,
In the case of STD+3, STD+0.039mm is a guide.
For that reason, please try it from a larger size and adjust it while checking the actual finish.

(FAQID:564)