A Hydraulic UNF Fitting is a precision-engineered hydraulic connector designed with UNF (Unified National Fine) threads, commonly used in SAE / JIC hydraulic systems. These fittings are widely adopted in high-pressure hydraulic applications where strong thread engagement, vibration resistance, and leak-free performance are critical.

UNF hydraulic fittings typically seal using a 37° flare (JIC standard) or an O-ring, rather than sealing on the thread itself. This metal-to-metal or elastomeric sealing method ensures reliable performance under high pressure and repeated assembly/disassembly, making UNF fittings ideal for maintenance-friendly systems.

Manufactured from high-strength carbon steel, stainless steel, or brass, Hydraulic UNF fittings are built to withstand demanding operating conditions. Protective finishes such as zinc plating or nickel plating provide excellent corrosion resistance and long service life.

These fittings are available in multiple configurations including straight, 45° elbow, 90° elbow, tee, reducer, and adaptor types, and are commonly used to connect hoses, tubes, pumps, valves, cylinders, and manifolds.

Key Benefits

Applications

Hydraulic UNF fittings are the preferred choice for SAE-compliant hydraulic systems, delivering consistent performance, safety, and durability in critical fluid power applications.