4AN STR Male Adapter 3/8in NPT Male Blue

The 4AN STR Male Adapter 3/8in NPT Male Blue from Redhorse Performance is a precision hydraulic and pneumatic fitting engineered for law enforcement, military, and tactical equipment systems. This straight adapter bridges AN (Army-Navy) standard tubing to NPT (National Pipe Thread) connections, making it essential for vehicles, weapons platforms, and fluid systems requiring reliable pressure-rated transitions. Built to MIL-A-25042 aerospace standards, it delivers the dependability demanded in high-stress field operations where system integrity is non-negotiable.

Constructed from aluminum alloy with a blue anodized finish, the 4AN STR adapter features a male AN port (4 size) and a 3/8-inch NPT male thread, delivering corrosion resistance and weight efficiency critical for mobile platforms. The straight (STR) configuration eliminates directional bulk, ideal for compact manifold layouts in tactical vehicles, aircraft hydraulic systems, or modular weapon-mounted subsystems. Anodizing provides both oxidation protection and operational visibility—the blue finish meets mil-spec color coding standards that speed system identification during maintenance or emergency repairs in low-light conditions.

Operators and technicians in military ground vehicles, helicopters, and tactical equipment assemblies rely on this adapter where fluid system redundancy and pressure integrity are mission-critical. It integrates seamlessly into existing NPT infrastructure while accepting standard 4AN hose configurations, eliminating the need for costly system overhauls during upgrades or repairs. Installation requires standard wrenching—the compact 2.835-inch length and 0.083-pound weight make it field-serviceable without specialized tools, ensuring rapid system restoration in austere environments or forward operating bases.