UNION (P/N ms21902-d4) - New Surplus
P/N: ms21902-d4
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 | 8 Available |
Product Description
The MS21902-D4 is a flareless tube union for joining rigid aircraft tubing in hydraulic systems. This fitting uses UNJF straight threads per AS8879 standard for boss-seal connections, allowing disassembly and reassembly during maintenance without disturbing connected fittings. The union connects two tube runs while maintaining system integrity under pressure.
Installation follows approved flareless assembly procedures with torque values specified in the aircraft maintenance manual. Commonly used in hydraulic line routing where tube-to-tube connections require periodic access.
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 UNION (P/N ms21902-d4)?
The MS21902-D4 is a flareless tube union for joining rigid aircraft tubing in hydraulic systems. This fitting uses UNJF straight threads per AS8879 standard for boss-seal connections, allowing disassembly and reassembly during maintenance without disturbing connected fittings.
Does the ms21902-d4 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The UNION 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 ms21902-d4 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 ms21902-d4.
Can I order the ms21902-d4 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The UNION is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.