NUT (P/N ms21921k6) - New Surplus

The MS21921K6 is a flareless sleeve coupling nut designed to secure ferrule and sleeve assemblies to aerospace tube fittings. This steel nut creates leak-tight hydraulic connections when torqued to specification on flareless tube fitting systems. Commonly used throughout aircraft hydraulic lines, fuel systems, and pneumatic circuits where vibration resistance and reliable sealing are critical.

Installation requires proper torque application and inspection per AS21921 standards and the applicable aircraft maintenance manual to ensure joint integrity and prevent fluid leakage during flight operations.

What is the NUT (P/N ms21921k6)?

The MS21921K6 is a flareless sleeve coupling nut designed to secure ferrule and sleeve assemblies to aerospace tube fittings. This steel nut creates leak-tight hydraulic connections when torqued to specification on flareless tube fitting systems.

Does the ms21921k6 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 ms21921k6 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 ms21921k6.

Can I order the ms21921k6 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.