Hydraulic hex nipples are fittings that are a brief section of pipe when it comes to plumbing and piping. When connecting piping to threaded fittings, valves, or equipment, a nipple is typically provided with a male pipe thread connection at each end of the fitting. These are basically moulded fitting with a six- or occasionally eight-sided piece in the middle, between the threads, a barrel nipple is constructed from a segment of pipe. Hydraulic hex nipples offer something for the user to hold onto when tightening and are more compact than barrel nipples. These are accessible in different sizes, shapes, finishes and features.