PLUG,TUBE FITTING,THREADED (P/N ms21914-5d) - New Surplus

The MS21914-5D is a threaded tube fitting plug designed to seal flareless tube ports in aircraft fluid systems. This steel connector caps hydraulic and pneumatic lines during maintenance procedures or serves as a permanent closure in approved repairs. The plug installs directly onto mating flareless fittings, creating a pressure-tight seal at the port seat per MS21914 specifications and MIL-S-8879 thread standards.

Commonly used in general aviation and commercial aircraft to prevent fluid leakage when lines are temporarily disconnected or permanently capped. Installation follows aircraft maintenance manual requirements for proper torque and sealing.

What is the PLUG,TUBE FITTING,THREADED (P/N ms21914-5d)?

The MS21914-5D is a threaded tube fitting plug designed to seal flareless tube ports in aircraft fluid systems. This steel connector caps hydraulic and pneumatic lines during maintenance procedures or serves as a permanent closure in approved repairs.

Is the ms21914-5d compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The PLUG,TUBE FITTING,THREADED is available in: New Surplus. We recommend checking your aircraft's wiring diagrams and STC documentation, or contact our avionics team for compatibility assistance.

Does the ms21914-5d come with an 8130-3 airworthiness tag?

Availability of an FAA 8130-3 tag depends on the part condition. Overhauled and repaired units typically include 8130-3 documentation. As-removed units may include a removal tag with trace history. Contact us for specific documentation on the condition you need.

Do you offer bench testing for the ms21914-5d?

We can arrange bench testing through our network of FAA-certified repair stations. Call (904) 998-9101 for testing availability and turnaround times, or submit an RFQ with your specific requirements.