Stainless steel fastener classification

- Jul 26, 2018 -

Stainless steel fasteners, also known as standard parts on the market, are a general term for a class of mechanical parts that are used to securely join two or more parts (or components) together. Stainless steel fasteners include 12 categories:

1. Rivet: It consists of two parts, a rivet shell and a rod, which are used to fasten and connect two sheets with through holes to achieve the overall effect. This type of connection is called a rivet connection, referred to as riveting. Riveting is a non-removable connection because the rivets on the part must be broken in order to separate the two parts that are joined together.

2. Bolt: A type of stainless steel fastener consisting of a head and a screw (a cylinder with an external thread). It is required to be fitted with a nut for fastening two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, it is possible to separate the two parts, so the bolt connection is a detachable connection.

3. Stud: A type of stainless steel fastener that has no head and only has threads on both ends. When connecting, one end must be screwed into the part with the internally threaded hole, the other end is passed through the part with the through hole, and then the nut is screwed, even if the two parts are fastened together as a whole. This type of connection is called a stud connection and is also a detachable connection. It is mainly used for the case where one of the connected parts has a large thickness, requires a compact structure, or is not suitable for bolting due to frequent disassembly.

4. Nut: With internal threaded hole, the shape is generally flat hexagonal column shape, but also has a flat square column or a flat cylindrical shape. It is matched with bolts, studs or machine screws for fastening two parts. It becomes a whole.

5. Screw: A type of stainless steel fastener consisting of two parts, head and screw. It can be divided into three categories according to the application: machine screws, set screws and special purpose screws. The machine screw is mainly used for a tightly threaded part and a tight connection between a part with a through hole and does not require a nut fit (this type of connection is called a screw connection and is also a detachable connection; Fitted with a nut for a secure connection between two parts with through holes.) The set screw is primarily used to secure the relative position between the two parts. Special purpose screws such as eyebolts are used for lifting parts.


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