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螺丝哪边是紧哪边是松
更新时间： 2021-11-30 09:44:37  

顺时针为紧，逆时针为松。螺丝帽类产品统称为紧固件或扣件，是以线材为材料制成。螺丝是指圆径较小之螺纹制品，如：螺丝、木螺丝、自攻螺丝等，螺栓是指圆径较大的螺纹制品，如：六角螺栓、四角螺栓、基础螺栓、Ｔ型螺栓等，螺帽则多为阴螺纹，主要为配合螺丝，作为固定或锁紧螺丝，螺帽的强度需配合与其共同使用的螺丝，一般高拉力螺丝配合硬质的螺帽使用。

关键词： 螺丝 哪边

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