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.

What conditions is the ms21042l4 available in?

The ms21042l4 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the ms21042l4?

The ms21042l4 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the ms21042l4?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.