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The spark plug standard is M14S × 1.25. See JISB8031.
Since OH4 falls into the category of OH4 accuracy, A-SFT's M14×1.25 (STD+1) (= OH4) corresponds to it.
Ｍ１０Ｓ×１→ＯＨ３
Ｍ１２Ｓ×１．２５→ＯＨ４
Ｍ１４Ｓ×１．２５→ＯＨ４
* In 1995, the standards for spark plugs for internal combustion engines were revised.
スパークプラグ用タップ | オーエスジー
Taps for spark plugs
No : 540
公開日時 : 2019/02/26 18:10
更新日時 : 2019/12/24 13:19
