Washer DIN 7989-1 M16(17,5) A4

A reinforced washer is a fastener that, compared to other types of washers, has an increased thickness, which, together with the high-strength steel from which it is made, allows it to be used under conditions of high static and dynamic loads in such types of equipment as presses and lifting mechanisms or for clamping devices.

DIN 7989-1 is used for steel structures. These washers are made of steel and have high strength, which makes them ideal for use in steel structures. Unlike DIN 7989-2, this type of washer has a higher hardness.

Application areas: construction and steel structures, bridge and engineering structures, machine building and heavy equipment, shipbuilding.

The material of manufacture is stainless steel. A4 steel grade allows the fastener to be used at high temperature extremes and in aggressive and humid environments.