BS EN 14399-4:2005

High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies

Executive summary

Requirements for assemblies of high-strength structural bolts and nuts of system HV for preloaded joints.

Abstract

This European Standard specifies the requirements for assemblies of high-strength structural bolts and nuts of system HV suitable for preloaded joints with large widths across flats, thread sizes M 12 to M 36 and property classes 10.9/10.

Bolt and nut assemblies conforming to this standard have been designed to allow preloading and to obtain ductility predominantly by plastic deformation of the engaged threads.

Bolt and nut assemblies according to this standard include washers according to EN 14399-6 or to EN 14399-5 (under the nut only).

History and related standards

This European Standard together with BS EN 14399-1:2005, BS EN 14399-2:2005, BS EN 14399-3:2005, BS EN 14399-5:2005 and BS EN 14399-6:2005 supersedes BS 4395-1:1969 and BS 4395-2:1969, which will be declared obsolescent in 2007, and then, together with BS 449 and BS 5950, will be withdrawn upon publication of Eurocode 3.

This standard includes the following cross references:

EN 493, EN 10045-1, EN 14399-1, EN 14399-2, EN 20898-2, EN 26157-1,

EN ISO 898-1, EN ISO 3269, EN ISO 4759-1, EN ISO 10684, ISO 148, ISO 261,

ISO 965-2, ISO 965-5.