PALNUT (P/N b330-25) - New Surplus

The b330-25 is a stamped steel Palnut self-locking fastener designed to prevent loosening from vibration. This spring sheet-metal nut grips mating threads to maintain preload without additional locking mechanisms. Commonly used in aircraft as a secondary lock or jam nut over hex nuts on threaded studs.

Installation follows aircraft maintenance manual procedures and 14 CFR Part 43 requirements. Ideal for light-duty vibration-resistant applications where space or weight constraints limit options.

What is the PALNUT (P/N b330-25)?

The b330-25 is a stamped steel Palnut self-locking fastener designed to prevent loosening from vibration. This spring sheet-metal nut grips mating threads to maintain preload without additional locking mechanisms.

Does the b330-25 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 b330-25 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 b330-25.

Can I order the b330-25 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.