Flat washer,which is called plain washer, mainly punched out from iron plates. The common shape of a flat washer is a hole in the central. The pore size specifications according to customer requirements. We can produce as customs request. That is customization. It has many standard: DIN125 DIN9021 F436, ect.

Plain washers, which spread a load, and prevent damage to the surface being fixed, or provide some sort of insulation such as electrical

Flat washer is generally used to distribute the load of a threaded fastener, such as a bolt, scres or nut. Other uses are as a spacer, spring (wave washer), wear pad, preload indicating device, locking device, and to reduce vibration , rubber washer. Washers usually have an outer diameter (OD) about twice larger than their inner diameter (ID).

Washers are usually metal and plastic and rubber. High-quality bolted joint require hardened steel washers to prevent the loss of pre-load due to Brinelling after the torque is applied.

For 100HV level, optional ST12, ST13 and Q235, Q215, Q195 and so on, the surface hardness can reach 110HV;

For 140HV level, optional 08F, 08Al and 10,10F etc., the surface hardness can reach 140HV;

For 200HV and 300HV level, the material should be used 45,50,60,70 steel or 65Mn steel, up to 200 ~ 300HV and 300 ~ 400HV technical requirements through heat treatment and quenching and tempering.

We provide Carbon steel flat washer, plain washer, high strength washer, stainless steel flat washer, stainless steel plain washer, flat washer DIN 125 &126 & 127, round washer & Square washer, support customer's special requirements.