5/8 5/16-18 Stainless steel square washer SS304 SS316 A2 A4-81 Customized Size Plain surface

5/8 5/16-18 Stainless steel square washer SS304 SS316 A2 A4-81 Customized Size Plain surface
 

Product Description:
 

Square shaped shims and round shims are two common fasteners, mainly used for connecting the gap and stress distribution between bolts, nuts and connecting parts to reduce friction, limit deformation, transfer pressure and prevent air and liquid leakage. Their main differences are as follows:

1. Shape: square shims are in quadrilateral shape with equal side lengths and 90-degree angles; round shims are round with uniform circumferential edges.

2. Application scenarios: square shims are suitable for certain square or regular structural connections and bolt holes due to their shape characteristics, mainly used for track connections such as angles, I-beams and rails, etc.; and round shims are suitable for a wide range of scenarios and are more commonly used than square shims.

3.Material: both can use a variety of metal and non-metallic materials, such as: steel, copper, aluminium, rubber, silicone, etc., just for different working conditions have to choose different materials.

4. Installation effect: due to the round gasket edges for the continuous circumference, by the distribution of stress is more uniform; square gaskets corners of the place of the relative concentration of the force, which may lead to local overloading of the corners of the parts. 

5. Torque control during installation: In general, it is easier to control the torque during installation of round shims because of their uniform pressure distribution; however, square shims may require stricter torque control during installation to avoid overloading at the corners.

6. Possibility of stress concentration: Square shims have four corners, while the edges of round shims are circumferential, so that when subjected to stress, square shims may be subjected to stresses more uniformly than round shims of the same material. Possibility of stress concentrations: Square shims have four corners, whereas round shims have circumferential edges.

A processing method for gaskets:
Etching processing is a processing method that removes unwanted parts with a corrosive solution, and is suitable for medium volume production, targeting a degree of about several hundred pieces. Etched shims are free of burrs, deformation, etc., and are processed with high precision. In addition, expensive fixtures, etc. are not required, so initial costs can be effectively reduced. In the etching process, photoresist is first applied to the metal material and then masked. The metal is then exposed to light, and the unmasked area is sensitised to light, thereby exposing the metal. Contact of the metallic material with the etchant in this state causes the exposed metal to corrode and be removed. Finally, the residual resist is removed, cleaned and dried to complete the process.

Applications

1, the basic knowledge of stainless steel
Stainless steel is an alloy material with corrosion resistance, and its main components are an alloy of elements such as iron, chromium and nickel. These elements can effectively resist oxidation and corrosion, so that stainless steel has a high degree of durability and aesthetics.
2, stainless steel maintenance methods
Cleaning
Keeping stainless steel products clean is an important part of their maintenance. You can use mild detergents and soft cloth for cleaning, avoid the use of detergents containing acidic and alkaline components, so as not to damage the surface of stainless steel. When removing dirt, you should try to avoid using irritating cleaning tools to avoid scratching the stainless steel surface. After cleaning, rinse with water and dry with a clean soft cloth.
3, the use of stain remover
For some stubborn dirt, you can use special stainless steel stain remover for cleaning. But before using it, you should carefully read and follow the instructions in the product manual. In addition, stainless steel products on the dirt can be cleaned with alcohol or vinegar, these common cleaners on stainless steel has a certain decontamination effect.

Steel types:

 
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