How the RIVNUT® works:

  • Thread RIVNUT® onto the tool mandrel
  • Place in the hole
  • Pull the tool trigger and the tool mandrel retracts causing the unthreaded portion of the RIVNUT® to expand behind the parent material riveting itself in place

RIVNUT® – The Original Design and Assembly Advantages

  • Installs blind in sheet metal, plastics and tubular materials.
  • Can be used as a rivet to assemble two or more materials and as a nut for the attachment of a mating part with a screw.
  • Installs into galvanized or pre-painted materials without damaging surface finishes.
  • Installs mechanically without deforming the parent material.
  • Installs before or after a finish is applied to the base material.
  • Installs into material as thins as .020 (0.5mm) providing strong load bearing threads.
  • Installs at a rate of 20 pieces per minute with pneumatic power tools.
  • Installs with inexpensive hand tools for field repair or consumer kit installation.
  • Installs with semi-skilled labor with minimal training.
  • Is ideal for automated assembly due to a balanced geometric shape.
  • Installation is environmentally friendly and produces no harmful gasses, heat, dust or electromagnetic fields to affect workers.
  • Installs into a wide range of material thicknesses due to a wide grip range tolerance.
  • Meets Property class 5 and metric class 8.8 mating screw proof loads.

Tubular Rivet

RIVNUT® – The original blind installed internally threaded rivet, was invented (patent #2,149,199) in 1936 for the purpose of attaching a rubber aircraft wing de-icer ectrusion to the leading edge of the wing. The RIVENUT® riveted the aluminum wing skin to the inner aluminum spar and then accepted a mating screw to attach the rubber de-icer.

The RIVNUT® fastener was given a military specification of MS27130 and an aerospace standard of NAS1329 and NAS1330. Use of the RIVNUT® expanded within the military and aerospace markets, and soon became popular in general industry because of its many design and assembly advantages.

United States Patent Office 2,149,199