NUT (P/N 383b) - New

The 383b is a plain hex nut for aircraft structural and system attachments. This steel fastener requires an auxiliary locking device—such as a checknut or safety wire—to prevent vibration loosening during flight operations. Used in airframe assemblies, control systems, and engine installations where standard hex nuts are specified.

Installation must follow the aircraft maintenance manual and FAA AC 43.13-1B guidance for proper locking method. NSN 5310-00-390-5478.

What is the NUT (P/N 383b)?

The 383b is a plain hex nut for aircraft structural and system attachments. This steel fastener requires an auxiliary locking device—such as a checknut or safety wire—to prevent vibration loosening during flight operations.

Does the 383b 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 383b 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 383b.

Can I order the 383b in custom quantities?

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