NUT (P/N ms21080-4) - New Surplus

The MS21080-4 is a one-lug self-locking nutplate designed for 1/4-28 UNJF fasteners. This steel nutplate features a nonmetallic locking insert that prevents vibration-induced loosening, conforming to MS21080 specifications (superseded by NASM21080). The captive threaded insert installs permanently into sheet metal with two rivets, creating a secure anchor point for access panels and removable components.

Installation requires torquing the mating screw per aircraft maintenance manual specifications. Thread class 3B ensures reliable engagement and repeatability across multiple removal and installation cycles.

What is the NUT (P/N ms21080-4)?

The MS21080-4 is a one-lug self-locking nutplate designed for 1/4-28 UNJF fasteners. This steel nutplate features a nonmetallic locking insert that prevents vibration-induced loosening, conforming to MS21080 specifications (superseded by NASM21080).

Does the ms21080-4 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 ms21080-4 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 ms21080-4.

Can I order the ms21080-4 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.