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:
| No. | C% | Cr% | Ni % | Mo % |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |
About Us
Package
