Washer flat in Moldova from M4 to M42 DIN 125, GOST 11371

Standard washers in accordance with GOST 11371, are used in mechanical engineering. Are applied to reduction of pressure upon a basic surface. Diameter of an opening is a little more than diameter of corresponding metric fixture. Are applied to reduction and distribution of pressure upon a basic surface. Conforms to the standards DIN 125, ISO 7089/7090.  DIN 125, GOST 11371 saiba, rondela