... Cone pinion 小伞齿轮 Cone washer 锥形衬垫 Cone 圆锥体/面/形/轮；【锥形】头部，弹头；锥形漏斗；电弧锥部 ...
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Two type, commonly combination washer , or male cone screw cooperate with female cylindrical screw as Europe standard.
有两种，一般的组合垫圈，或者欧标用圆柱内螺纹配圆锥外螺纹。
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Cone head drive screw with washer - used on roof for keeping fixing holes watertight.
锥头机螺钉垫圈-用于屋顶保持固定孔水密。
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