プラグゲージの外径の寸法が大きいような気がする | オーエスジー

M8×1.25 For 2nd grade,

The outer diameter of the GO gauge (GP) is +6~+18 micrometers compared to 8.

The outer diameter of the Tap varies slightly depending on the accuracy, but it is set at +60 micrometers or more, so it does not interfere.

(FAQID:202)