Overview
DIN 433 is a flat washer (narrow, lined) - a fastener that has a reduced outer diameter and almost does not protrude beyond the dimensions of the head of a standard bolt or nut. It is made of steel with a hardness of 140, 200 HV. They are used with screws that have a cylinder-shaped head. This product is also known as a backing washer or reduced washer.
DIN 433 fastener group
- High-strength fastener - made of high-strength steel
- Stainless fastener - made of stainless steel.
Materials for the manufacture of DIN 433 washers
- Steel, which can be optionally coated with zinc
- Stainless steel (A2, A4) does not need to be coated
Application range of DIN 433 washers
DIN 433 is used to increase the clamping area in various types of connections, reduce pressure on the surface of the connecting materials, and reduce friction between the nut and the surface of the part when tightening.
It is most commonly used in mechanical engineering, but due to its universal properties, it is used in almost all sectors of modern industry.
