REDUCER,BOSS (P/N ms21916d8-4) - New Surplus
P/N: ms21916d8-4
Category: Fittings & Adapters
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 1 Available |
Product Description
The MS21916D8-4 is a reducer boss fitting that adapts between different-size straight-thread boss ports in aircraft hydraulic systems. This threaded adapter steps down port sizes while maintaining compatible interfaces for manifold connections. The fitting uses gasket-type sealing at external boss ends to prevent fluid leakage under pressure.
Commonly installed in hydraulic manifolds and fluid distribution blocks on general aviation and commercial aircraft. Installation requires torque per aircraft maintenance manual specifications and MS/AS fitting standards.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the REDUCER,BOSS (P/N ms21916d8-4)?
The MS21916D8-4 is a reducer boss fitting that adapts between different-size straight-thread boss ports in aircraft hydraulic systems. This threaded adapter steps down port sizes while maintaining compatible interfaces for manifold connections.
Does the ms21916d8-4 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The REDUCER,BOSS 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 ms21916d8-4 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 ms21916d8-4.
Can I order the ms21916d8-4 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The REDUCER,BOSS is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.