Straight Adapter Fitting #4 x 1/16 MPT

The Straight Adapter Fitting #4 x 1/16 MPT by FRAGOLA is a precision-engineered hydraulic and pneumatic connector designed for systems requiring seamless fluid or air transfer between mismatched port sizes. This aluminum adapter bridges a #4 AN (Army-Navy) male connection to a 1/16-inch NPT (National Pipe Thread) male port, making it essential for custom fuel systems, high-performance automotive applications, aerospace equipment, and industrial machinery where space constraints or existing infrastructure demand flexible adapter solutions.

Manufactured from lightweight aluminum and finished in blue anodized coating, this straight adapter provides excellent corrosion resistance and durability in demanding environments. The anodized finish protects the aluminum substrate from oxidation while maintaining low weight—critical for racing and aerospace applications where every fraction of a pound matters. The straight-flow design minimizes turbulence and pressure loss, ensuring maximum system efficiency. FRAGOLA's precision machining guarantees tight tolerances and leak-free performance when properly installed with appropriate thread sealant on NPT connections.

Professionals in motorsports, aviation maintenance, and industrial fluid systems rely on this adapter to retrofit existing equipment or customize new installations. The compact 1.55 x 0.85 x 4.15-inch footprint fits tight engine bays and equipment cabinets without requiring extensive rerouting. Installation requires standard wrenches and thread tape or sealant compound; the NPT male end accepts industry-standard 1/16-inch fittings found in gauges, valves, and injection ports. This adapter is particularly valued for fuel injection systems, turbo boost lines, and pneumatic control circuits where AN-to-NPT transitions are unavoidable.