Danfoss / Eaton Hose End E Series

It's made for a hose with a -8 dash size.

Carbon steel on its own can be prone to corrosion, but Eaton put a Dura-Kote plating on these fittings specifically to handle that. It's a step above standard zinc plating and gives you noticeably better corrosion resistance without needing extra protection on your end. For most shop and field environments, the plating does the heavy lifting.

For a -8 hose assembly, this is an E Series crimp hose fitting with a JIC 37 male rigid end. The end size is 0.75 and the end gender is male, so it matches the JIC 37 male rigid style you mentioned.