Alum #16 Locknut Black

The Alum #16 Locknut Black by AEROQUIP is a critical hydraulic and pneumatic fastening component engineered for military, law enforcement, and tactical equipment systems. This locknut serves as a secondary locking mechanism in fluid line assemblies, preventing unintended loosening due to vibration, pressure cycling, or environmental stress. Operators and armorers rely on quality locknuts to maintain system integrity in mission-critical applications where equipment failure is not an option.

Manufactured from aluminum alloy and finished in black, the Alum #16 Locknut delivers lightweight construction without sacrificing holding strength. The #16 designation indicates the metric or imperial thread size standard, making it compatible with AEROQUIP's broad range of quick-disconnect couplings, hose fittings, and modular tactical equipment interfaces. The black anodized or powder-coat finish resists corrosion, salt spray, and chemical exposure—essential for field-deployed gear that encounters harsh environments. This design prevents fastener rotation through interference fit geometry, eliminating the need for constant re-torquing during extended operations.

Tactical professionals, maintenance technicians, and equipment builders benefit most from stocking this locknut for hydraulic system repairs, assault pack load-out assembly, and portable power unit maintenance. The compact 0.05 lb weight and minimal profile make it ideal for field repair kits where space and weight discipline matter. Installation is straightforward: hand-tighten onto the corresponding thread, then snug firmly with a wrench—avoid over-torque on aluminum to prevent stripping. Compatibility extends across AEROQUIP's FCM (flat-face and ISO quick-disconnect) product lines and similar military-grade fluid connectors used in portable compressors, hydraulic reels, and tactical water systems.