NUT (P/N ms21042-4) - New Surplus, New

The MS21042-4 is an all-metal self-locking hex nut with reduced height, manufactured to MS/NASM21042 specifications. This steel nut features a 1/4-28 thread and prevailing-torque design that prevents loosening from vibration in high-temperature aerospace applications. The compact profile minimizes weight while maintaining secure fastening in engine compartments, structural assemblies, and systems exposed to thermal cycling.

Installation and replacement must follow aircraft maintenance manual requirements and NASM33588 limitations for self-locking nuts to ensure airworthiness and safety compliance.

What is the NUT (P/N ms21042-4)?

The MS21042-4 is an all-metal self-locking hex nut with reduced height, manufactured to MS/NASM21042 specifications. This steel nut features a 1/4-28 thread and prevailing-torque design that prevents loosening from vibration in high-temperature aerospace applications.

Does the ms21042-4 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 ms21042-4 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 ms21042-4.

Can I order the ms21042-4 in custom quantities?

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