REDUCER,BOSS (P/N ms21916-6-4) - New Surplus
P/N: ms21916-6-4
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 MS21916-6-4 is a boss reducer that steps a straight-thread port from -6 to -4 size. This MS21916/AS21916 standard component features UNJF external boss threads designed for gasket or O-ring sealing in aircraft hydraulic manifolds. The reducer installs directly into the boss port to adapt component connections where size transitions are required.
Assembly uses preformed packing material with torque specifications per the aircraft maintenance manual and AS21916 standard. Commonly found in hydraulic systems on general aviation and transport aircraft.
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 ms21916-6-4)?
The MS21916-6-4 is a boss reducer that steps a straight-thread port from -6 to -4 size. This MS21916/AS21916 standard component features UNJF external boss threads designed for gasket or O-ring sealing in aircraft hydraulic manifolds.
Does the ms21916-6-4 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 ms21916-6-4 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 ms21916-6-4.
Can I order the ms21916-6-4 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.
Related Fittings & Adapters
- TEE – P/N ms20826-4d
- NIPPLE – P/N st3045-08
- TEE – P/N an804-6d
- ELBOW AY – P/N 3014214
- COUPLING ASSY – P/N 14j02-24a
- KEY, WOODRUFF, ALLOY STEEL, WITH K – P/N ms35756-10
- UNION – P/N ms21919
- ADAPTER – P/N ms27404-4d
- COUPLING – P/N 3024973
- ADAPTER-TRANSFER TUB – P/N 3112634-01
- ADAPTER – P/N 035a-963047-1
- ADAPTER – P/N 25-8ek65-1