Classification Of Fasteners

There are many ways to classify fasteners. The following classification is based on three aspects: connection method, usage function and material properties:

1. Classification by connection method:

(1) Threaded fasteners: such as bolts and nuts, which are connected by threaded engagement.

(2) Riveted fasteners: such as rivets, which are connected between parts by riveting.

(3) Pin fasteners: such as pins, which are inserted into the holes of the connected parts to achieve positioning and fixation.

2. Classification by usage function:

(1) Load-bearing fasteners: such as high-strength bolts and load-bearing rivets, which can withstand large loads and are used to connect important structures.

(2) Non-load-bearing fasteners: such as ordinary screws and washers, which mainly play an auxiliary fixing and positioning role and do not require high connection strength.

3. Classification by material properties:

(1) Metal fasteners: such as steel bolts and copper nuts, which have high strength and hardness and are suitable for connection needs in various harsh environments.

(2) Non-metallic fasteners: such as plastic screws, rubber washers, etc., have good corrosion resistance and insulation properties, and are suitable for connection requirements in specific occasions. For example, in electronic equipment, in order to ensure the insulation performance of the circuit, non-metallic fasteners are usually used for fixing and connection. In addition, non-metallic fasteners can also show better durability in humid or corrosive environments.