6an to 3/8npt Adapter Fitting w/1/8npt port

The AEROQUIP 6AN to 3/8NPT adapter fitting with 1/8NPT port is a precision hydraulic and pneumatic system connector designed for applications requiring reliable fluid or air transfer between incompatible port standards. This straight adapter serves technicians, mechanics, and engineers who need to integrate AN (Army-Navy) fittings with NPT (National Pipe Thread) ports—a common requirement in custom fuel systems, air suspension setups, pressure gauges, and industrial hydraulic assemblies. The gauge port option allows real-time system monitoring without requiring additional tee fittings.

Manufactured from aluminum and finished with black anodize coating, this adapter balances weight savings with corrosion resistance, making it suitable for both automotive and stationary applications. The 6 AN male inlet threads to a 3/8 inch NPT male outlet, with the 1/8 NPT gauge port branching perpendicular for pressure or temperature sensor integration. Black anodizing protects against oxidation while maintaining visual identification in engine bays and equipment cabinets. The compact design (2.35 × 1.15 × 3.75 inches, weighing just 0.06 lbs) minimizes installation complexity and maintains clean plumbing runs in space-constrained environments.

Professionals benefit most from this adapter when retrofitting older NPT-based systems with modern AN hose routing or when consolidating separate gauge isolation valves into one compact fitting. Installation requires standard wrench sizes for both AN and NPT fittings; thread sealant (PTFE tape or pipe dope) is recommended on NPT ports to ensure leak-free operation under pressure. Compatible with any system running hydraulic fluid, air, or water at the pressure ratings of the connected components—verify system specifications before purchase to confirm thread engagement length and pressure capacity.