NUT,TUBE COUPLING (P/N an818-3d) - New Surplus
P/N: an818-3d
Category: Fasteners & Hardware
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 | 11 Available |
Product Description
The AN818-3D is a tube coupling nut (B-nut) for 3/16-inch flared tubing, conforming to Army-Navy standards with UNF Class 3B threads. This aluminum alloy nut secures an AN819 sleeve to male fittings, sealing 37-degree flares in aircraft fluid systems. Commonly used in pitot-static lines and other pneumatic/hydraulic connections.
Installation requires pairing with AN819-3D sleeve and torquing per aircraft maintenance manual specifications to ensure leak-free assembly.
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 NUT,TUBE COUPLING (P/N an818-3d)?
The AN818-3D is a tube coupling nut (B-nut) for 3/16-inch flared tubing, conforming to Army-Navy standards with UNF Class 3B threads. This aluminum alloy nut secures an AN819 sleeve to male fittings, sealing 37-degree flares in aircraft fluid systems.
Does the an818-3d meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The NUT,TUBE COUPLING 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 an818-3d 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 an818-3d.
Can I order the an818-3d in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The NUT,TUBE COUPLING is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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