NUT, TUBE COUPLING (P/N ms21921-5) - New Surplus

The MS21921-5 is a steel tube coupling nut conforming to Military Standard MS21921. This nut threads onto the mating body of hydraulic or fuel line assemblies, securing the sleeve and fitting to create a pressure-tight joint. The nut fits over the sleeve and engages with standard aerospace tubing connections.

Installation requires proper torque specification per the aircraft maintenance manual and Illustrated Parts Catalog. Verify compatibility with existing line assemblies before installation.

What is the NUT, TUBE COUPLING (P/N ms21921-5)?

The MS21921-5 is a steel tube coupling nut conforming to Military Standard MS21921. This nut threads onto the mating body of hydraulic or fuel line assemblies, securing the sleeve and fitting to create a pressure-tight joint.

Does the ms21921-5 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The NUT, TUBE COUPLING 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 ms21921-5 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 ms21921-5.

Can I order the ms21921-5 in custom quantities?

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