Parts with threads used for joining and fastening are called screw fasteners. The most widely used components as screw fasteners are bolts, double screw bolts, screws, nuts, washers.
用螺纹联接并起紧固作用的零件称为螺纹紧固件。常用的螺纹紧固件有螺栓、双头螺柱、螺钉、螺母、垫圈等。
The fastening screw has the advantages that: the fastening screw has better guiding performance and can better fix the relative position of two parts.
本实用新型的优点在于：导向性能更好，能够更好地固定两个零件之间的相对位置。
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