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.
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