This standard specifies the characteristics of bolts, normal hexagonal head, coarse tolerance normal shank, medium length thread, in heat resisting nickel base alloy, aluminium IVD coated.
Classification: 1 250 MPa ) / 425 °C )
WITHDRAWN
EN 4131:2009
99.60
Withdrawal effective
Aug 26, 2026
WITHDRAWN
EN 4131:2009/AC:2010
PUBLISHED
EN 4131:2026