Fasteners

A fastener or fastening is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. 

Type of Fasteners 

1 Nuts 

It is a small block of metal or other material commonly square or hexagonal in shape. It has internal threads to receive a bolt.

2 Bolts

A bolt is a form of threaded fastener with an external male thread requiring a matching pre-formed female thread such as a nut. Bolts are very closely related to screws.

3 Screws

A screw and a bolt are similar types of fastener typically made of metal and characterized by a helical ridge, called a male thread. Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread in a matching part.

4 Washers

A washer is a thin plate with a hole that is normally used

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