NAS679A3W - Textron Aviation Self-Locking Hexagon Nut
The NAS679A3W self-locking hexagon nut, engineered by Textron Aviation, is an integral component designed to meet the rigorous demands of Beechjet and Premier aircraft. This advanced fastener ensures structural integrity and reliability under the most extreme conditions.
Material and Construction:
- Material Composition: The NAS679A3W is manufactured from a high-strength, corrosion-resistant stainless steel alloy, ensuring superior durability and longevity. The specific alloy composition includes nickel, chromium, and molybdenum, which provide exceptional resistance to stress-corrosion cracking and oxidation.
- Surface Treatment: The nut undergoes a passivation process to enhance its corrosion resistance, followed by a proprietary coating that provides additional protection against harsh aerospace environments.
Technical Specifications:
- Dimensions: Engineered in strict adherence to NAS679 specifications, the nut features precise dimensional tolerances that ensure a perfect fit and optimal load distribution. The hexagonal profile is designed for easy wrenching and secure tightening.
- Self-Locking Mechanism: The self-locking feature incorporates an all-metal design with a unique thread deformation that provides consistent and reliable locking torque. This mechanism ensures the nut remains securely fastened even under severe vibration and dynamic loading conditions, which are typical in aviation applications.
- Temperature and Vibration Resistance: The NAS679A3W is designed to perform reliably across a wide temperature range, from -65°F to 450°F (-54°C to 232°C). Its construction resists thermal expansion and contraction, maintaining its integrity in fluctuating temperatures. The self-locking feature is tested to withstand high-frequency vibration without loss of torque, crucial for maintaining aircraft safety.
- Compliance and Certification: Each NAS679A3W nut complies with the National Aerospace Standards (NAS) and is subjected to rigorous quality control and testing procedures, including tensile strength tests, salt spray tests for corrosion resistance, and vibration tests. Certification documentation, including material certificates and traceability, is available to meet regulatory and operational requirements.
Applications:
- Aircraft Models: Specifically designed for Beechjet and Premier aircraft, the NAS679A3W nut is used in various critical fastening applications, including airframe assembly, engine mounting, and control surfaces.
- Maintenance and Replacement: The nut's robust design simplifies maintenance procedures, allowing for easy installation and removal without compromising performance. It is an ideal replacement part for maintaining the structural integrity and operational safety of aircraft.
By choosing the NAS679A3W self-locking hexagon nut, aviation professionals ensure that their aircraft components meet the highest standards of safety, reliability, and performance.
This premium component is available for purchase at AirParts.Aero, your trusted source for aviation parts and accessories. Visit our shop to get your NAS679A3W hexagon nut and other essential aircraft components.
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DESCRIPTION
Self-Locking Hexagon Nut
- 3B thread class
- Low height
- Hexagon nut style
- Internal wrenching
- Locknut
- Dry film lubricant
- Material: Steel
- Finish: Cadmium
Applicable Textron Aircraft
- Beechjet 400/400A
- Premier Model 390
List not comprehensive, may be applicable on other models.