Standard analysis of all aspects of fastener products

1) Standards for fastener product size: specify the content of the basic size of the product; for threaded products, it also includes the basic size of the thread, thread end, shoulder distance, undercut and chamfer, and the end of external threaded parts Dimensions and other aspects.

2) Standards on the technical conditions of standard fasteners. Specifically, it includes the following standards: a) Fastener product tolerance standards: specify product size tolerances and geometric tolerances. b) Standards for mechanical performance of fastener products: specify the marking method of product mechanical performance levels and 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) Surface treatment standards of fastener products: specify product surface treatment types and specific requirements. e) Fastener product testing standards: specify the test content of the various performance requirements mentioned above. (Guide: the similarities and differences between cold forging and hot forging nuts of fasteners)

3) Fastener product acceptance inspection, marking and packaging standards: specify the qualified quality level and sampling plan of the random inspection items during the factory acceptance of the product, as well as the content of the product marking method and packaging requirements.

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

5) Other standards of fasteners: such as the standard of fastener terminology, the standard of fastener product weight, etc.

More relevant stamping product industry news: