ADAPTER (P/N r3904) - New Surplus

The r3904 is an aircraft adapter designed to join dissimilar fittings or transition between different thread types in hydraulic, fuel, and pneumatic systems. Machined from aerospace-grade aluminum or steel, this connector follows AN/MS/NAS standards for reliable pressure-sealed joints. Installation requires torquing per aircraft maintenance manual specifications to prevent leaks in flight-critical circuits.

Commonly used in engine and airframe system line routing where thread form or size changes are necessary.

What is the ADAPTER (P/N r3904)?

The r3904 is an aircraft adapter designed to join dissimilar fittings or transition between different thread types in hydraulic, fuel, and pneumatic systems. Machined from aerospace-grade aluminum or steel, this connector follows AN/MS/NAS standards for reliable pressure-sealed joints.

Does the r3904 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The ADAPTER 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 r3904 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 r3904.

Can I order the r3904 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The ADAPTER is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.