Blind rivet nuts add strength to aluminium

Edited by the Engineeringtalk editorial team May 20, 2003

On complex architectural extrusions such as aluminium door and window frames a blind rivet nut can be used to create a deep reusable thread and at the same time add a steel strip to the inside.

On complex architectural extrusions such as aluminium door and window frames a blind rivet nut can be used to create a deep reusable thread and at the same time add a steel strip to the inside, strengthening the section where a hinge or lock is to be fitted.

Where such a thread is needed, one answer is to cut an access hole on the opposite side but this would be unsightly and reduce structural strength.

The blind rivet nut solves the problem without defacing the surface and strengthens the section.

The increased use of aluminium and magnesium alloys, and plastics in place of steel has lead to a search for such fasteners attached by other than welding.

Use of a closed end type in such applications, window latches, and outside grills can also prevent the ingress of water or other foreign materials.

When installed, the blind rivet nut body is designed to undergo controlled deformation, creating a firm 360-degree rib which grips the underside of the mounting surface, pulling together the two materials which do not have to be of the same material.