NUT (P/N kj4004) - New Surplus

The kj4004 is a self-locking aircraft nut designed to secure threaded fasteners in airframe assemblies. Available as all-metal or nylon-insert types conforming to AN, MS, or NAS standards, this nut prevents vibration-induced loosening on structural panels and brackets. Installation requires at least one thread to protrude through the nut.

Do not use self-locking variants on rotating parts. Verify proper torque and thread engagement per FAA AC 43.13-1B guidance.

What is the NUT (P/N kj4004)?

The kj4004 is a self-locking aircraft nut designed to secure threaded fasteners in airframe assemblies. Available as all-metal or nylon-insert types conforming to AN, MS, or NAS standards, this nut prevents vibration-induced loosening on structural panels and brackets.

Does the kj4004 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The NUT 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 kj4004 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 kj4004.

Can I order the kj4004 in custom quantities?

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