Analysis of fasteners

2022-12-28

Fasteners are also called standard parts in the market, which is a general term for a type of mechanical parts used when two or more parts (or components) are fastened and connected into a whole. It is characterized by a wide variety of specifications, different performances and uses, and a high degree of standardization, serialization, and generalization. Fasteners are the most widely used mechanical basic parts and are in great demand.

  standard

1. Standards for the size of fastener products: specify the basic size of the product; for products with threads, it also includes the basic size of the thread, the end of the thread, the shoulder distance, the undercut and chamfer, and the end of the externally threaded parts Dimensions etc.

2. Standards on the technical conditions of fastener products. Specifically, the standards include the following aspects:

a) Standards for fastener product tolerances: specifically specify the content of product size tolerances and shape and position tolerances.

b) Standards for the mechanical performance of fastener products: specify the marking method of the mechanical performance grade of the product, as well as the content of mechanical performance items and requirements; some fastener products change this content to product material performance or work performance aspect content.

c) Standards for surface defects of fastener products: specify the types and specific requirements of product surface defects.

d) Standards for surface treatment of fastener products: specify the types and specific requirements of product surface treatment.

e) Standards for fastener product testing: specifically specify the content of the above-mentioned various performance requirements for testing.

3. Standards for acceptance inspection, marking and packaging of fastener products: specifically stipulate the qualified quality level and sampling plan of the random inspection items when the product is inspected and accepted at the factory, as well as the content of product marking methods and packaging requirements.

4. Standards on the marking method of fastener products: specifically stipulate the content of the complete marking method and the simplified marking method of the product.

5. Standards for other aspects of fasteners: such as standards for terminology of fasteners, standards for the weight of fastener products, etc.
  • QR
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy