1 /2". V. V. 3/4". △ (4牙) X (3牙). 3/4". V. V. 3/4". V. △ (4牙). 1" ... BS-PT. BS-PS. 歐規(DIN). DIN-R. 美規. (ANSI). 斜度牙. (Taper Thread).
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