P/N: ms21902-4
Category: Fittings & Adapters
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
| Condition | Stock |
|---|---|
| New Surplus | 2 Available |
The MS21902-4 is a flareless boss nipple that creates straight unions between aircraft hydraulic tubing and threaded boss ports. This steel fitting connects two hydraulic lines at a 90-degree angle without requiring flared tube ends, simplifying installation in tight spaces. Used throughout hydraulic systems in general aviation and commercial aircraft where boss-to-boss connections are specified.
Assembly requires a preformed packing or gasket and torque per the aircraft maintenance manual. Also cross-referenced as AS21902-4.
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.
The MS21902-4 is a flareless boss nipple that creates straight unions between aircraft hydraulic tubing and threaded boss ports. This steel fitting connects two hydraulic lines at a 90-degree angle without requiring flared tube ends, simplifying installation in tight spaces.
Aircraft hardware is manufactured to military and aviation specifications. The NIPPLE,TUBE conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
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 ms21902-4.
Yes, we sell hardware in various quantities from single units to bulk lots. The NIPPLE,TUBE is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.