Parker, 31D82-8-4

The Parker push-on, barb-style field-attachable hydraulic fittings that allow users to quickly and easily make hose assemblies right on the job site without special tools. When coupled with Parker’s Push-Lok hoses, 82 series fittings deliver convenience and shorter assembly times, as no clamp is required.

Can be assembled in field with wrenches
Imperial HEX
Wide range of end configurations
One piece reduces complexity and leakage path