Steel Adapter, 1.00 Braze Tube To 1-7/16-12 Female O-Ring Face Seal Nut

This steel adapter is designed for demanding hydraulic applications, ensuring a secure connection between a 1.00 braze tube and a 1-7/16-12 female O-ring face seal nut.

Yeah, that's exactly what it is. Part of the Eaton Aeroquip FC2326 series, sold specifically as a spare part nut for that line. The SKU is FC2326-16S and it also carries catalog number C1EP99, so if you're cross-referencing against a Danfoss or Eaton parts list, either of those should get you where you need to go.

Match it up by the end connections. FC2326-16S is a steel adapter in the Eaton Aeroquip FC2326 series that connects a 1.00 braze tube on one side to a 1-7/16-12 female O-ring face seal nut on the other.