3/4 STEEL TUBING COMPRESSION X 3/4 MJIC

Built for that exact transition, one side is a 3/4 inch tube OD compression connection and the other side is a 3/4 male JIC 37 degree flare (SAE J514).

Designed for high-performance connections, this fitting from Brennan Industries is suitable for demanding environments, so it should be a reliable solution in your hydraulic system, provided the specs match your equipment.

For a 3/4 OD steel tube on one end and a 3/4 male JIC on the other, yes, that's exactly what this fitting handles. The compression side grabs the tube OD directly, and the male JIC end uses a 37 degree flare seat per SAE J514, with a 1 1/16-12 thread on both ends. Brennan's C2402 series is built for that kind of transition in working hydraulic lines, so the connection should be solid as long as your tube OD and mating JIC port match up.