#4 To 10mmx1.0 Female Steel Adapter

The #4 To 10mmx1.0 Female Steel Adapter by AEROQUIP is a precision hydraulic fitting designed for professionals who demand reliable fluid-system connections in high-pressure environments. Built for law enforcement, military, and industrial applications, this straight adapter bridges AN (Army-Navy) standard male fittings to metric female ports without compromise. Whether you're maintaining tactical vehicle hydraulics, portable equipment systems, or field-deployed machinery, this adapter ensures leak-free performance under demanding conditions.

Manufactured from steel with zinc oxide protection, the #4 To 10mmx1.0 Female Steel Adapter features a straight-flow design that minimizes pressure drop and turbulence in critical hydraulic circuits. The 10 mm × 1.0 female metric thread on one end mates with a #4 AN (0.25-inch) male connection on the other, providing a seamless interface between legacy AN-standard equipment and modern metric hydraulic components. The zinc oxide finish resists corrosion and oxidation, extending service life even in salt-laden or moisture-rich operational theaters. At 0.18 lbs, it integrates into space-constrained tactical platforms without adding unnecessary weight.

Field technicians, armorer teams, and equipment maintenance personnel rely on metric-to-AN adapters when retrofitting older tactical systems with modern hydraulic components or when cross-compatible piping runs are unavoidable. Installation is straightforward: thread the female end onto a 10 mm × 1.0 metric port and secure the male AN end to your #4 AN line, ensuring proper torque specifications are observed to prevent leakage under full operational load. The compact 2.15 × 1.1 × 3.75-inch footprint fits into tight engine bays, turret assemblies, and integrated hydraulic manifolds. Always verify thread compatibility and pressure rating before deployment in mission-critical systems.