Screw Fasteners (螺纹紧固件)

Typesof  screw fasteners(螺纹紧固件的种类)

Parts with threads used for joining and fastening are called screw fasteners.The most widely used components as screw fasteners are bolts, studs, screws,nuts, washers as shown in Fig. 7-13.

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,如图7-13所示。