Introduction to stainless steel fasteners and standard fasteners

Updated:26-10-2019
Summary:

“Stainless Steel Fasteners” is a specific terminology t […]

“Stainless Steel Fasteners” is a specific terminology that encompasses a wide range of products. Stainless steel fasteners are often used for fastening on more expensive machine parts due to their aesthetics, durability, and corrosion resistance. With the advancement of society, higher requirements have been placed on stainless steel standard parts. Stainless steel fasteners are also referred to as stainless steel screws and are national standard screws. Specifications and tolerances are all national standards.

 

Standard fasteners are standardized mechanical parts for fastening joints. Standard fasteners mainly include bolts, studs, screws, set screws, nuts, washers and rivets (see figure). There are many types of bolts, and the heads are mostly hexagonal. Bolts subjected to impact, vibration or variable load, in order to increase flexibility, the polished rod portion is made into a thin section or hollow. The seat end of the stud is screwed into the threaded hole of the coupled piece, and the nut end is similar to the bolt nut. The structure of the screw is roughly the same as that of the bolt, but the shape of the head is varied to suit different assembly spaces, tightening and joint appearance. The set screws have different head and end shapes to accommodate different degrees of tightening. Nuts are also available in a variety of styles and are most widely used in hexagonal shapes. The gasket is primarily used to protect the bearing surface of the coupled component. Bolts, nuts, etc. are mostly made of medium carbon steel. They are also useful for alloy steel. They can also be made of copper, copper alloy and other non-ferrous metals when required for corrosion or electrical conductivity. Standards in China and many countries stipulate that threaded joints are graded according to mechanical properties, and grade codes are marked on fasteners. The rivets are made of steel, aluminum alloy or copper alloy, and the head has various shapes to meet the needs of different rivets.

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