This document specifies the characteristics of bolts, normal hexagonal head, coarse tolerance shank, short thread, in heat resisting nickel base alloy, aluminium IVD coated.
Classification: 1 250 MPa/425 °C.
PUBLISHED
SRPS EN 4128:2017
PROJECT
dnaSRPS EN 4128:2026
50.99
FDIS or proof approved for publication
Oct 19, 2026