NAS1329 & NAS1330 National Aerospace Standard Fasteners

Nearly 100 years ago, the BF Goodrich Company invented the rivet nut for an aerospace application and trademarked it as the RIVNUT® (Bollhoff Inc. is now the proud manufacturer of the RIVNUT®).

The original design and use for the RIVNUT® was for the sole purpose of easily attaching/removing rubber de-icers to aerospace/aviation wings.

At the time that this assembly method was implemented, the world was unaware of the impact that the fastener would have on other assemblies found in manufacturing and most industries in general. RIVNUTS® have been used in aerospace, automotive, heavy truck, military, boats, lawn mowers, refrigerators, dishwashers….YOU name it!

Fast forward to today, the Aerospace Industries Association put together the National Aerospace Standard (NAS) Fastener standards called NAS 1329 and NAS 1330 to control the design and manufacture of rivet nuts for aerospace applications.

Rivet Nut USA, a division of Cardinal Components Inc., is proud to offer NAS 1329 and NAS 1330 rivet nuts.

What is NAS 1329 and NAS 1330?

The aerospace industry has strict standards for round body, open- and closed-end rivet nuts. These standards are set forth by the National Aerospace Standards NAS 1329 (flat head) and NAS 1330 (countersunk head). The rivet nuts have a round body and undergo an ultimate thread strength test to assure good performance in the field.  Dimensions are controlled by tight tolerances to assure consistent, high quality, repeatability field performance.  The materials are under strict control, for example Aluminum must be either 5056, 6053, or 6061 material that meets applicable ASTM or AMS material standards.  The finishes are under strict control as well, for example the stainless steel must be passivated per AMS2700, and the steel must be cadmium plated per an AMS specification.

The latest revision of each standard, both NAS 1339 and NAS 1330, are available for purchase at:

• NAS 1329: https://global.ihs.com/doc_detail.cfm?document_name=NAS1329&item_s_key=00079166
• NAS 1330: https://global.ihs.com/doc_detail.cfm?document_name=NAS1330&item_s_key=00079167

Rivet Nut USA also has a purchased copy of each standard and can help you interpret the standard to ensure that you are purchasing the correct part number (i.e., NAS1329A3K130 = Aluminum material, 10-32 thread, keyed head, open end body style with being able to offer a grip range of 0.080 to 0.130 inch thick parent application).

United States Patent Office 2,149,199 Tubular Rivet Defined

“Rivnut® – Is the original blind installed internally threaded rivet, and was invented (patent #2,149,199) in 1936 for the purpose of attaching a rubber aircraft wing de-icer extrusion to the leading edge of the aircraft wing. The Rivnut® riveted the aluminum wing skin to the inner aluminum spar and then accepted a mating screw to attach the rubber de-icer. This novel fastening solution allowed for easy disassembly during servicing of the rubber de-icer, which is what a plain rivet could not offer, as a plain rivet would permanently affix the de-icer to the wing.

The RIVNUT® fastener can be manufactured to general commercial specifications, or military specification of MS27130 or MS27131, or Aerospace Standards NAS 1329 and NAS 1330. It is important to list the exact part number needed, as the same rivet nut could be called several different part numbers.

• Note: MS27130 and MS27131 were cancelled in July 2001 and superseded by NAS 1329 and NAS 1330. Please call us at Rivet Nut USA to help cross over your old MS part numbers to current NAS part numbers.

Use of the RIVNUT® expanded within the military and aerospace markets, and rapidly became a popular go-to fastening method in general industry due to its many design and assembly advantages.

To meet the rigors of aerospace requirements, standards NAS 1329 and NAS 1330 were developed. NAS 1329 and NAS 1330 aerospace rivet nuts are manufactured with aluminum, steel, stainless steel, or steel alloy material. These aerospace standards were established to assure repeatable and dependable performance when being used in aviation applications that demand the highest quality.

Original Equipment Manufacturers (OEMs) Rely on these Fasteners to:

• Perform blind installations (no access to backside of application)
• Act like a rivet, but with disassembly convenience, when assembling two or more materials
• Act as a nut base for secondary attachment via a mating screw / bolt
• Installation is environmentally friendly – produces no harmful gasses, heat, dust or electromagnetic fields that affect workers (unlike welding)
• Install into galvanized or pre-painted material without damaging surface finishes
• Install without deforming parent material
• Install before or after a finish is applied to a product
• Install with non-capital investment handheld pneumatic power tools for medium to high volume applications
• Install at a rate of 20 pieces per minute with pneumatic power tools (in best conditions)
• Install with inexpensive hand tools, for low volume applications or field repair or consumer kit installation (use tool once and discard)
• At the highest volumes, rivet nuts are ideal for automated assembly due to a balanced geometric shape with little dimensional variation (due to the consistent nature of the cold heading manufacturing process)
• Skilled or semi-skilled labor will have alike success doing the install on an assembly line, minimal training required
• Installs into material as thin as .020″ (0.5mm), providing strong load bearing threads
• Installs into a wide range of material thicknesses due to a wide grip range tolerance
• Specific types of rivet nuts will support Grade 5 and Metric Class 8.8 mating screw proof loads

Rivet Nuts, also Trademarked as RIVNUTS®, are Utilized in Many Industries:

• • • Aerospace Equipment
    • Agricultural Equipment
    • Aviation
    • Bike Building
    • Boat Building
    • Cabinetry Assembly
    • Car Workshops
    • Construction Equipment
    • Appliances
    • Electronic Assembly
    • Energy
    • Furniture Assembly
    • HVAC
    • Machine Tools
    • Mechanical Engineering
    • Medical Equipment
    • Metal Fabrication
    • Military Equipment Assembly
    • Motor Repairs
    • Oil, Gas and Chemicals
    • Plastics Assembly
    • Railway
    • Recreation Equipment Assembly
    • RV Equipment Assembly
    • Ship and Yacht Building
    • Vehicle, Truck and Automobile Assembly

Rivnut® Fasteners may meet these Standard Requirements and Specifications:

National Aerospace Standard Fastener Supplier and Distributor

For an evaluation of your application and how a National Aerospace Standard Fastener can help save you time, $$ and manpower, contact Rivet Nut USA (a division of Cardinal Components)! Our experienced aerospace fastener engineers are well-versed in assemblies, engineered fasteners, and installation requirements.