方头螺钉.ppt

《方头螺钉.ppt》由会员分享，可在线阅读，更多相关《方头螺钉.ppt（8页珍藏版）》请在得力文库 - 分享文档赚钱的网站上搜索。

1、Chapter 18 Fasteners A fastener is any devices used to connect two or more components.There are hundreds of fastener types used in machine design.But the most common are threaded fasteners.Such as:Bolt（螺栓）,nut（螺母）,screw（螺钉）,lag screw（方头螺钉）,set screw（紧定螺钉）,washer（垫圈）。Hex bolt and hex head cap screwnA

2、 bolt is a threaded fastener design to pass a hole in the mating member and to be secured by tightening a nut from the end opposite the head of the head.nA screw is a threaded fastener design to be inserted through a hole in one member to be connected and into a threaded hole in the mating member,no nut is needed.18-2 other types of fastener and accessoriesSet screw(紧定螺钉）with different head and point styles used to hold a collar on a shaftLock devices(锁紧装置）Type of thread connect