1. Flat gasket, mainly made of iron sheet, is generally in the shape of a flat gasket with a hole in the middle Increase the contact area between screw and machine. Eliminate the damage of the spring pad to the machine surface when unloading the screws. It must be used with a spring pad and a flat pad, with the flat pad next to the surface of the machine and the spring pad between the flat pad and the nut. 2. Flat washers are usually thin pieces of various shapes designed to reduce friction, prevent leakage, isolate, and prevent loosening or distributing pressure. These components are found in many materials and structures and are used to perform a variety of similar functions. Restricted by the material and process of threaded fasteners, the supporting surface of bolts and other fasteners is not large, so in order to reduce the compressive stress on the bearing surface to protect the surface of the connected parts, gaskets are used. In order to prevent the loosening of the connection pair, anti-loose spring washers, multi-tooth lock washers, round nut stop washers and saddle, wave and tapered elastic washers are used.

Product name	Flat mat
Product specification	M5-M50
Surface treatment	zinc
Material	Carbon steel, stainless steel
Standard	DIN、GB
Grade	4.8、8.8
About the material	Our company can customize other different materials different specifications can be customized

1. The locking effect of the spring washer is general. The important parts should be used less or not as far as possible, and the self-locking structure should be adopted. For the spring washer used for high-speed tightening (pneumatic or electric), it is best to use the surface phosphating washer to improve its wear reduction performance, otherwise it is easy to burn out or open the mouth due to friction and heat, or even damage the surface of the connected parts. Spring washers shall not be used for thin plate connections. According to statistics, spring washers are being used less and less in automobiles.