PALNUT (P/N 818) - New Surplus

The 818 PALNUT is a stamped spring-steel locknut designed to prevent fastener loosening under aircraft vibration. This thin check nut installs over a standard nut or bolt head as a secondary lock on airframe assemblies. Spring steel construction provides elastic tension that resists rotation and maintains fastener security throughout flight operations.

Per FAA AC 43.13-1B guidance, palnuts should not be reused after removal. Common in general aviation and commercial aircraft structural connections where vibration-resistant fastening is required.

What is the PALNUT (P/N 818)?

The 818 PALNUT is a stamped spring-steel locknut designed to prevent fastener loosening under aircraft vibration. This thin check nut installs over a standard nut or bolt head as a secondary lock on airframe assemblies.

Does the 818 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The PALNUT 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 818 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 818.

Can I order the 818 in custom quantities?

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