Stainless steel fastener product size standards: specify the content of the basic size of the product; threaded products.
Not the standard in terms of product technical conditions. Specifically, it includes the following standards:
Standards for product tolerances of fasteners: specify the content of product size tolerances and geometric tolerances.
Standards for mechanical properties of fastener products: specify the marking method of product mechanical property grades and the content of mechanical property items and requirements; some fastener products change this content to product material properties or working performance. content.
Standards for surface defects of fastener products: specify the types of surface defects and specific requirements of products.
Surface treatment standards for fastener products: specify the types and specific requirements of product surface treatment.
Fastener product test standards: specify the test content of the above-mentioned various performance requirements.
Standards for product acceptance inspection, marking and packaging of stainless steel fasteners:
Standard on the marking method of fastener products: specify the content of the complete marking method of the product and the simplified marking method.
Other standards for stainless steel fasteners: such as fastener terminology standards, fastener product weight standards, etc.