10.9级公制内六角平杯螺丝钉 沉头内六角公制螺栓DIN7991-10.9 全牙内六角螺栓 高强度内六角螺栓 沉头内六角螺栓

10.9级平头内六角螺丝钉 沉头内六角公制螺栓DIN7991

强度等级：碳钢10.9级/12.9级

表面处理：镀黑发黑

头部形状：沉头

材质：碳钢

标准：DIN7991
类别：机螺钉
槽型：内六角

沉头内六角螺栓又称之为平杯内六角螺栓，普遍的有英制和公制的，经常使用的材质有不锈钢和碳钢。螺丝头外边是圆的，中间是凹进去的六边形，它的头部是一个90 度的椎体，组装之后，螺丝头能够陷入组装面，让组装面保持整齐。沉头内六角螺栓经常使用于机械设备上，主要有利于紧固，拆解，不易滑角等优势。

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