#6 Male to 16mm x 1.5 Adapter

The EARLS #6 Male to 16mm x 1.5 Adapter is a straight-pattern hydraulic fitting designed to bridge #6 AN (Army-Navy) male threads to 16mm x 1.5 metric male ports. Built from aluminum construction with blue anodized finish, this adapter incorporates a crush washer sealing surface for reliable, leak-free connections in high-pressure fluid systems. The compact 1.45-inch length and lightweight 0.04 lbs design make it ideal for space-constrained installations across automotive, motorsport, and industrial applications where standard metric hydraulic lines must interface with AN-spec equipment.

The #6 AN male thread (0.375-inch diameter) converts cleanly to 16mm x 1.5 metric specification, allowing technicians to adapt existing hose assemblies or component ports without replacing entire fluid systems. The crush washer design—a reusable metal washer that deforms under torque to create a metal-to-metal seal—eliminates the need for thread sealant tape on this fitting. Aluminum composition keeps weight to a minimum while maintaining adequate strength for moderate-pressure applications. The blue anodized surface resists oxidation and provides visual identification in complex plumbing layouts.

This adapter serves technicians and fabricators who work across mixed AN and metric hydraulic standards—common in vintage military vehicle restoration, high-performance engine builds, and industrial equipment retrofitting. It's particularly valuable in applications where AN-equipped components (such as fuel systems, cooling circuits, or pressure-relief lines) must connect to metric-threaded manifolds or filtration blocks. Proper torque specifications and crush washer replacement at each disassembly ensure reliable performance and prevent fluid leakage in mission-critical systems.