Straight Adapter Fitting #20 x 1 1/4 MPT Black

The Straight Adapter Fitting #20 x 1 1/4 MPT Black is a precision hydraulic and fuel system connector engineered for demanding applications where reliable AN-to-NPT transitions are essential. This adapter bridges 20 AN (Air Force-Navy) male ports to 1 1/4 inch NPT (National Pipe Thread) male connections, making it ideal for high-pressure fuel systems, custom plumbing, industrial equipment, and performance automotive setups that require secure, leak-free coupling between different thread standards.

Constructed from aluminum with a black anodized finish, this straight adapter delivers corrosion resistance and a professional appearance while maintaining lightweight durability. The black anodized coating provides both aesthetic appeal and functional protection against oxidation in harsh environments, making it suitable for engine bays, marine installations, and outdoor fuel or coolant lines. The straight design—without any offset or elbow—ensures a compact footprint and simplified routing in tight spaces, while the dual male threads guarantee positive engagement on both connection points without requiring additional fittings.

This fitting serves racers, mechanics, and engineers who standardize fuel delivery systems using AN fittings but must interface with NPT-threaded components such as fuel filters, manifolds, or legacy equipment. Installation requires standard wrenches and thread sealant tape or compound on the NPT male end to ensure a watertight seal. The 0.25 lb lightweight design integrates seamlessly into custom fuel systems, hydraulic circuits, and coolant applications where vibration resistance and code compliance are paramount.