Standard

BS EN 4131:2026

Aerospace series. Bolt, normal hexagonal head, coarse tolerance normal shank, medium length thread, in heat resisting nickel base alloy, aluminium IVD coated. Classification: 1 250 MPa (at ambient temperature) / 425 °C

Current

•

Published:

31 Aug 2026

1 Scope

This document 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 MPa1/425 °C2.

Product Details

Descriptors

Marking

Nickel alloys

Bolts

Aircraft components

Metal coatings

Aluminium

Surface treatment

External-thread fasteners

Fasteners

Hexagonal-head fasteners

Threaded fasteners

Heat-resistant materials

Weight (mass)

Dimensions

Designations

ICS Codes

49.030.20 Bolts, screws, studs

Committee

ACE/12

International relationships

Identical to:

EN 4131

ISBN

978 0 539 37700 2

Publisher

BSI