ELBOW,BOSS (P/N an939-4) - New Surplus
P/N: an939-4
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 | 3 Available |
Product Description
The AN939-4 is a boss elbow fitting that redirects hydraulic flow 90 degrees in aircraft manifolds and valve housings. This aluminum or steel elbow uses straight-thread ports with UNJF threads and AN939 gasket-seal geometry for reliable pressure connections. Commonly found in hydraulic systems on general and corporate aircraft, the fitting requires torquing and sealing per maintenance manual specifications.
Installation involves mating the boss seal with the component interface to prevent leakage under operating pressure.
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 ELBOW,BOSS (P/N an939-4)?
The AN939-4 is a boss elbow fitting that redirects hydraulic flow 90 degrees in aircraft manifolds and valve housings. This aluminum or steel elbow uses straight-thread ports with UNJF threads and AN939 gasket-seal geometry for reliable pressure connections.
Does the an939-4 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The ELBOW,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 an939-4 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 an939-4.
Can I order the an939-4 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The ELBOW,BOSS is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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