Ace Hardware Hydraulic Fittings

Hydraulic fittings are available with different thread standards for specific connection systems. Correct identification of thread type, diameter, pitch, and thread form is essential for accurate selection and installation.

JIC: UN/UNF threads with a 37° flare connection.

BSPP / BSPT: British Standard parallel or tapered pipe threads.

NPT: American tapered pipe threads.

SAE / Metric: Thread configurations vary by fitting series and sealing design.

37° Flare Sealing: JIC fittings seal through metal-to-metal contact between matching flare surfaces.

O-Ring Face Sealing: ORFS fittings use an O-ring compressed between mating flat faces to form a fluid-tight seal.

Tapered Thread Sealing: NPT and BSPT connections rely on mating tapered threads and the specified sealing method.

Cone Seat Sealing: Compatible cone-seat fittings form a seal through accurately matched metal sealing surfaces.

O-Ring Sealing: Where specified, an O-ring seals against a designated mating surface or port geometry.

Thread Compatibility: Confirm thread standard, nominal size, pitch, and thread form.

Mating Interface: Match the flare angle, cone seat, face-seal geometry, or port design as applicable.

Pressure Rating: Ensure the fitting and mating components meet the required working pressure, including applicable system requirements.

Fluid & Temperature: Verify material and seal compatibility with the hydraulic fluid and operating temperature range.

Installation Conditions: Check hose or tube size, fitting orientation, available clearance, and specified assembly requirements.

Specification Verification: Review thread standards, connection dimensions, sealing interfaces, and fitting configurations against your technical requirements.

Drawing & Sample Assessment: Evaluate engineering drawings or physical samples to identify critical dimensions, mating interfaces, and manufacturing requirements.

Replacement Part Identification: Assist in matching existing fittings using part numbers, dimensional data, photographs, or supplied samples.

Custom Design Review: Assess non-standard connection combinations, dimensional modifications, material requirements, and surface finishes for manufacturing feasibility.

Application Suitability: Review specified working pressure, hydraulic fluid, operating temperature, and installation conditions against the selected fitting specifications.