NAS1329A06K75 – Textron Aviation OEM Open Ended Key Rivnut
Available now on the Airparts.aero Marketplace.
Overview
The NAS1329A06K75 is a National Aerospace Standard, open-ended, keyed blind threaded insert, commonly known as a Rivnut® or nutsert. This high-performance fastener is designed to provide a strong, permanent, and reliable threaded receptacle in thin sheet metal, composites, or other materials where a tapped thread is not feasible. The "keyed" feature—a small locating key on the body—is designed to fit into a corresponding notch in the installation hole, providing excellent resistance to spin-out under torque. This specific part number denotes an aluminum alloy construction, ideal for lightweight aerospace applications.
Key Features
- Provides Permanent Threads: Allows for the installation of strong, reusable machine screw threads in materials that are too thin or soft to be tapped directly.
- Keyed for Spin-Out Resistance: Features a "key" or "lug" on the body that locks into a notch in the installation hole. This mechanical lock provides significantly higher resistance to spinning compared to standard round-body Rivnuts, especially when high torque is applied to the mating screw.
- Blind Installation Capability: Can be installed entirely from one side of the workpiece, making it ideal for use in closed-out structures like tubes, extrusions, and assembled boxes where there is no access to the backside.
- Lightweight Aluminum Alloy: The "A" designation signifies it is manufactured from a high-strength, lightweight aluminum alloy, providing excellent performance without a significant weight penalty.
- NAS Certified Standard: Manufactured in strict accordance with the NAS1329 standard, guaranteeing material quality, dimensional tolerances, and performance characteristics for certified aviation use.
Technical Specifications
- Standard: NAS1329 (Rivet, Blind, Threaded, Keyed, Open End)
- Full Part Number: NAS1329A06K75
- Material (A): Aluminum Alloy
- Head Style: Flat Head
- Thread Specification: 6-32 UNC-3B
- Nominal Diameter: #6 (0.138 inches)
- Threads Per Inch: 32 (Coarse Thread)
- Grip Range (K75): 0.051 to 0.100 inches (This is the material thickness range the Rivnut is designed to be installed in).
- Key Style: Single Key
- Installation Tool Requirement: Manual or pneumatic Rivnut installation tool with a corresponding 6-32 pull-up stud.
Aircraft Compatibility
The NAS1329A06K75 is a universal fastener used across all types of modern aircraft where strong, anti-rotation threaded inserts are required in thin materials. It is specified by Textron Aviation and other manufacturers for numerous non-structural and secondary structural applications.
- Common Applications:
- Avionics Installation: Mounting avionics trays, shelves, and instruments to thin sheet metal panels.
- Interior Completion: Securing interior panels, brackets, and furnishings.
- Systems Installation: Providing threaded attachment points for hydraulic, fuel, and electrical line clamps (adel clamps).
- Fairings & Access Panels: Attaching various non-structural fairings and frequently removed access panels.
Applications
The NAS1329A06K75 is the engineered solution for creating reliable threaded points in challenging locations:
- High-Torque Assemblies: The keyed body makes it ideal for applications where the mating screw will be torqued to higher values or subjected to frequent removal and reinstallation.
- Single-Sided Access: The only viable solution for adding threads to completely enclosed structures.
- Composite & Soft Materials: Provides a strong, load-bearing thread without the risk of delamination or material damage associated with tapping directly into the parent material.
Why Choose NAS1329A06K75?
A standard Rivnut can spin in its hole if the mating screw is over-torqued or becomes corroded, leading to a difficult and time-consuming repair. The keyed design of the NAS1329A06K75 mechanically prevents this failure mode, ensuring a reliable and serviceable threaded point for the life of the airframe. Using a certified NAS standard part guarantees that the fastener has the correct material strength, thread class, and dimensional tolerances required for a professional and airworthy installation.
Order Your NAS1329A06K75 Rivnuts Now
Create strong, reliable, and spin-proof threaded attachments with certified NAS hardware. Visit Airparts.aero to order your NAS1329A06K75 keyed Rivnuts today.
The installation of a NAS1329A06K75 Rivnut is a process of controlled deformation. After being inserted into a pre-drilled and notched hole, a specialized tool engages the threads and pulls the stud outward. This pulling action causes the unthreaded shank of the Rivnut to collapse and bulge outward on the blind side of the material, forming a secondary head. This bulge clamps the parent material securely between the Rivnut's flat head and this newly formed backside flange. The "key" mechanically locks the fastener to the parent material, preventing the entire insert from rotating as torque is applied to the service screw. The "grip range" is the most critical parameter for selection, as it must precisely match the thickness of the material to ensure the bulge forms correctly and creates a secure clamp.
Note: Installation requires a pre-drilled round hole with a small, straight-sided notch to accommodate the key. The hole size must be precise. Always use the correct installation tool to ensure the Rivnut is properly set without being over-stressed. Do not exceed the specified grip range for the selected fastener.
