Specification for Stiffnuts (Unified threads) for aircraft Ingestion-build-141043 1 This British Standard relates

1 This British Standard relates to (1) cylindrical shaft ends and (2) to conical shaft ends with parallel keyway

This International Standard specifies requirements for bearing metals based on tin casting alloys for multilayer plain bearings

and surface finishes that do not foul easily or which can be cleaned easily

are within the scope of BS EN 60335-2-17

That housing (outside the insulating core) is made of polymeric material and end fittings permanently attached to the insulating core

Specification for Stiffnuts (Unified threads) for aircraft Ingestion-build-141043 1 This British Standard relates1 Scope 1. 1 These British Standards cover the dimensions, material, finish, testing and identification of aircraft stiffnuts with Unified threads. According to the materials used in their construction, the stiffnuts are classified as satisfactory for use at sustained temperatures within the following ranges: a) 75 C to + 425 C: corrosion resisting steel nuts, silver plated or unplated b) 75 C to + 200 C: steel and corrosion resisting steel nuts,