Blue Anodized Aluminum Adapter, -04 Male JIC 37 deg Flare To 1/8 Inch Male NPT, Straight

On one side it is a -04 male JIC 37 degree flare, and the other side is a 1/8 inch male NPT pipe thread. So it is meant to connect a -04 JIC female flare fitting to a 1/8 NPT female port, in a straight adapter.

That's what this one's built for. One end is a -04 Male JIC 37-degree flare, the other is 1/8 inch Male NPT, straight configuration. If your line and your port match those specs, you're good to go. The Eaton Aeroquip part number is FBM2001, also listed as C1CQ18 or FCM2001 if you're cross-referencing against another catalog.

According to the fluid compatibility document, this adapter is compatible with a wide range of hydraulic fluids, so you should be good to go in most applications.

For tying a -04 male JIC 37 degree flare connection into a 1/8 inch male NPT threaded port, that is exactly what this straight adapter is built to do.

That's what this adapter is built for. One end threads into a 1/8 inch male NPT port and the other connects to a -04 male JIC 37-degree flare. Both ends are male, so you'd need female counterparts on each side of your connection. The straight configuration keeps things clean and compact, which helps a lot when you're working in a tight spot around pump housings or valve blocks.