Multi-faceted Standardization Of Fastener Products

Standards for the size of stainless steel fastener products: specify the content of the basic size of the product; products with threads.
It is not a standard in terms of product technical conditions. Specifically, the standards include the following aspects:
Standards for fastener product tolerances: specifically specify the content of product size tolerances and shape and position tolerances.
Standards for the mechanical performance of fastener products: specify the marking method of the mechanical performance grade of the product and the content of the mechanical performance items and requirements; some fastener products change this content to the product material performance or work performance. content.
Standards for surface defects of fastener products: specify the types and specific requirements of product surface defects.
Standards for surface treatment of fastener products: specify the types and specific requirements of product surface treatment.
Standards for fastener product testing: specifically specify the content of the above-mentioned various performance requirements for testing.
Standards for stainless steel fastener product acceptance inspection, marking and packaging:
Standards on the marking method of fastener products: specify the content of the complete marking method and the simplified marking method of the product.
Standards for other aspects of stainless steel fasteners: such as standards for terminology of fasteners, standards for the weight of fastener products, etc.