What Adapter For

Hydraulic fittings

Identify tractor and equipment hydraulic fittings, look up their threads and find the adapter between two ends.

Identify a hydraulic fittingAnswer what the end looks like, pick the thread you measured, and get the fitting it most likely is and what else it could be. Hydraulic adapter finderPick the port on the machine and the end on the hose, and get the adapter between them, named by its two ends. Hydraulic thread chartThreads by dash size for JIC, ORB, 45° and ORFS, the width across male and female threads, pipe and metric threads, with a printable PDF. JIC vs ORB vs ORFSA 37° cone, an O-ring behind the threads or an O-ring in a flat face: how to tell the three apart, and the adapters between them. NPT vs BSP on hydraulicsNPTF on US machines, BSPP and BSPT on European and Japanese ones: how each seals, how to tell them apart, and joining them. Tractor quick couplersThe ag coupler tip is standard (ISO 7241 Series A); the thread on its back isn’t. Match both when you replace one. Brass fittings on hydraulicsBrass hydraulic fittings exist, rated lower than steel. The test for any fitting, from any store, is its published working pressure.

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General guidance from fitting makers' catalogs and safety guides, not a substitute for your machine's manual. Release the pressure before you loosen any fitting, use only parts rated for your machine's pressure, and if you can't identify a fitting for sure, take it to a hydraulic hose shop.