Structural washer, EN14399-6-HV, certificate 3.1B, tZn, M30 (31x56x5)

High-strength, prestressed construction washers in accordance with EU Regulation №305 / 2011.
EN 14399-6 defines, together with EN 14399 1 and EN 14399 2, hardened and hardened chamfered flat washers intended for bolted joints with bolts and nuts according to EN 14399 with thread sizes from M12 to M36 inclusive.
Attention is drawn to the importance of ensuring the correct use of the washers in order to achieve satisfactory results. For recommendations on proper application, reference is made to EN 1090-2.