-6AN to 12mm x 1.5 Metri c Straight Adapter

The -6AN to 12mm x 1.5 Metric Straight Adapter is a precision fluid-transfer fitting designed for hydraulic systems, fuel lines, and pneumatic applications where metric and AN (Army-Navy) standards must interconnect. This adapter bridges the gap between legacy -6 AN port sizes and modern 12mm x 1.5 metric thread specifications, making it essential for custom fabrication, restoration projects, high-performance automotive builds, and industrial equipment integration. Whether you're upgrading a classic vehicle with modern components or standardizing mixed-standard plumbing on a machine, this straight adapter ensures reliable, leak-free connections without flow disruption.

Constructed from aluminum and finished with black anodized coating, the -6AN to 12mm x 1.5 Metric Straight Adapter provides excellent corrosion resistance and durability in both wet and dry environments. The anodized layer protects against oxidation while maintaining a professional appearance, and the aluminum construction keeps weight negligible—just 0.03 lbs—making it ideal for weight-conscious applications like motorsports and aerospace work. This fitting uses a crush washer sealing method, a proven design that creates a reliable mechanical seal at both the 6 AN male inlet and the 12mm x 1.5 male outlet, eliminating the need for thread sealant tape and reducing installation time. The straight configuration allows for clean, direct flow paths without elbows, critical for high-pressure hydraulic or fuel systems where bend-induced turbulence can affect performance or create hotspots.

This adapter suits engineers, fabricators, and enthusiasts building or modifying systems that combine North American and metric standards—common in imports, engine conversions, and industrial retrofits. Installation is straightforward: thread the 12mm x 1.5 end into the metric port, insert the crush washer on the 6 AN side, and torque the connection per your system's specification. Compatible with hydraulic fluid, fuel, water, and compressed air (confirm fluid compatibility for specialty applications), the -6AN to 12mm x 1.5 Metric Straight Adapter delivers the standard-bridging reliability that serious builds demand.