NUT (P/N ms21042l4) - New Surplus

The MS21042L4 is an all-metal self-locking hex nut conforming to MS21042/NASM21042 specifications. Constructed from steel with 1/4-28 internal threads, this nut uses prevailing-torque deformation to resist loosening under vibration. Rated for continuous service to 450°F, making it suitable for high-temperature engine and airframe installations.

Commonly secured to access panels and structural fastening points in vibration-prone areas. Install with compatible 1/4-28 bolts and torque per the applicable aircraft maintenance manual and NASM21042 guidance.

What is the NUT (P/N ms21042l4)?

The MS21042L4 is an all-metal self-locking hex nut conforming to MS21042/NASM21042 specifications. Constructed from steel with 1/4-28 internal threads, this nut uses prevailing-torque deformation to resist loosening under vibration.

Does the ms21042l4 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 ms21042l4 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 ms21042l4.

Can I order the ms21042l4 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.