psめねじをチェックするゲージは？ | オーエスジー

Since the PS internal thread is a combination of PT external thread , a tapered plug gauge (PT) is used for pass/fail judgment.

However, only if the PS internal thread uses a PS external thread (now obsolete) and the PS plug gauge is used for gauge inspection of that internal thread .

References: For pipes that are easy to make mistakes gauge
gauge determines the "fit" of the screw.
Use a gauge that is the same shape as the person you are ⇒ is addicted to!

shape	Types of screws	Use gauge
Current JIS	Parallel internal thread Rp	tapered screw plug gauge R
Conventional JIS	Parallel internal thread PS	tapered screw plug gauge PT

(FAQID:215)