AN To NPT 90 Degree -10 x 1/2in

The ALLSTAR PERFORMANCE AN to NPT 90 Degree -10 x 1/2in adapter (SKU ALL 49578) is a precision hydraulic and pneumatic fitting designed to connect AN-thread male ports to NPT-thread female ports at a 90-degree angle. Constructed from aluminum with black anodized finish, this adapter provides corrosion resistance and a clean appearance in high-pressure fluid delivery systems. The -10 AN designation indicates a 5/8-inch SAE port size, while the 1/2-inch NPT thread ensures compatibility with standard industrial and performance plumbing specifications.

AN (Army-Navy) fittings and NPT (National Pipe Taper) threads serve different pressure systems. AN threads are preferred in high-performance applications due to their straight-thread design and positive sealing under pressure, while NPT threads remain standard in many industrial, agricultural, and fuel system configurations. The 90-degree elbow configuration allows for compact routing where space constraints prevent straight connections, eliminating the need for separate elbows and reducing potential leak points. Black anodized aluminum delivers lightweight strength while resisting oxidation in humid or temperature-fluctuating environments common to racing, marine, and off-road applications.

This adapter is essential for builders integrating NPT-ported components—such as pressure gauges, relief valves, and filter housings—into AN-plumbed systems. Common applications include performance fuel systems, custom cooling circuits, air suspension control lines, and aftermarket hydraulic brake setups. Buyers working with mixed-port equipment or upgrading legacy plumbing to modern AN standards will find this elbow fitting a straightforward solution for bridging incompatible thread types without requiring expensive adapter blocks or custom fabrication.