cotter hole 中文意思是什麼
cotter hole
解釋
扁銷孔-
Bolt, hexagonal head, with cotter pin hole, current use
常用帶銷孔六角頭螺釘 -
Bolt, hexagonal head, with cotter pin hole, current use. iso thread
帶開尾銷孔常用六角頭螺栓. iso螺紋
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