NUT, SELF-LKG, HEX (P/N nas679-a4) - New Surplus

The NAS679-A4 is a self-locking hex nut with an all-metal prevailing-torque design. This low-height hex profile nut resists vibration loosening without nylon inserts, making it suitable for weight- and space-constrained aircraft structures. The nut installs on matching fine-thread studs or bolts using standard hex tooling.

Commonly used for securing airframe access panels and structural fastening where vibration resistance is critical. Installation and torque specifications should follow the applicable aircraft maintenance manual.

What is the NUT, SELF-LKG, HEX (P/N nas679-a4)?

The NAS679-A4 is a self-locking hex nut with an all-metal prevailing-torque design. This low-height hex profile nut resists vibration loosening without nylon inserts, making it suitable for weight- and space-constrained aircraft structures.

Does the nas679-a4 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The NUT, SELF-LKG, HEX conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the nas679-a4 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the nas679-a4.

Can I order the nas679-a4 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The NUT, SELF-LKG, HEX is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.