Pins are usually used for position, can be used to connect or lock parts, and can also be used as overload shear elements in safety devices.a) Cylindrical pin: Cylindrical pins are mostly used for fix...

The washer is placed between the bearing surface of bolts, screws, nuts, etc. and the workpiece bearing surface to prevent loosening and reduce the stress on the bearing surface.a) Flat washer: Used t...

Screws are usually used alone (sometimes with washers). They are generally used for tightening and should be screwed into the internal threads of the body.a) Machine screws: There are many varieties d...

A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination o...

Bolts are widely used in detachable connections in mechanical manufacturing, and are generally used in conjunction with nuts (usually apply with one or two  washers).a) General purpose of bolts: There...