Four Different Types of Fasteners That Every Contractor Should Know

 A fastener is a device that joins two or more objects mechanically. Fastening is a process in which two or more machine parts are joined together. A fastener can be used to create permanent or temporary joints. The non-permanent joints can be further dismantled. Examples of fasteners are – nuts, bolts, studs, screws, washers, clips, rivets, nails, etc. These are some items that we used in our day-to-day life. So, fasteners play a crucial role in modern technology and even in our day-to-day life. 

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Fasteners can be classified into three categories:- 

1. Temporary Fastening or Non-Permanent Fasteners:-

As the name suggests these types of fasteners are temporary in nature. In this type of fastening, different devices or parts of the machine are joined temporarily and the joint can be opened without causing any damage to both parts. The term temporary does not mean that the joint is weak as combinations of nuts and bolts can be used in many high torque applications. 

Example – Nuts and bolts which are threaded can be easily assembled and disassembled when required. Others are non-threaded such as pins, keys, retaining rings, etc. 

2. Semi-Permanent Fasteners:-

In this type, the joints of two parts are joined in a semi-permanent manner. In this method, if the fastener is opened to open the machine parts, then there is no damage to the parts of the machine, but the fastener definitely gets spoiled. 
Examples of this type of fasteners are rivets and solder are called semi-permanent fasteners

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