Allen Nut 碳钢发黑套筒螺母 Socket Nut

也被称为艾伦螺母 Allen Nut，这些螺母可用于凹陷孔和空间狭小且无法容纳扳手的部位，与沉头内六角螺钉配合使用。使用六角六角扳手将其拧紧。它们还可以通过压入或拉入非硬化钢、铸铁或软质有色金属，或者嵌入塑料、陶瓷、纤维及类似材料中，作为嵌件使用。它们由合金钢制成，强度与9级螺栓相当。（我们也可提供优质优价的替代品）无忧工业五金-https://www.21parts.com/picture/9266.html

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