Blue Anodized Aluminum Adapter, -06 Male JIC 37 deg Flare To 3/8 Inch Male NPT, Straight

That's what this adapter is built for. One end is a -06 male JIC 37 degree flare, the other is 3/8 inch male NPT, straight configuration. So if you've got a JIC hose end on one side and a female NPT port on the other, this bridges that gap clean without any extra pieces in between.

For that hookup, you want an adapter with a -06 male JIC 37 degree flare on one end and a 3/8 inch male NPT (male pipe) on the other, in a straight body. This part matches that: -06 male JIC 37 degree flare to 3/8 male NPT, straight.

For that hookup, you want an adapter that is -06 male JIC 37 degree flare on one side and 3/8 inch male NPT (male pipe) on the other. This part matches that combo and it is a straight adapter.

That's what this one's built for. One end is a -06 male JIC with the standard 37-degree flare seat, and the other is a 3/8 inch male NPT. Straight configuration, no offset or angle. If your line and port match those two thread types, you're good to go.

That's precisely what this Eaton Aeroquip adapter is made for. It provides a reliable connection between a -06 male JIC 37-degree flare and a 3/8 inch male NPT pipe.