Image Credit: Parker Hannifin | Grainger Industrial Supply | Stucchi, Inc. Hydraulic fittings are parts used to connect hoses, pipes, and tubes in hydraulic systems. Hydraulic equipment generally ...

Hydraulic fittings are available in threaded ... There are three major thread types for grease fittings: metric, taper or parallel, and unified. M5, M6, M7, M8, and M10 are common metric threads.