The file '1-1/4″ Thread To 16mm Nozzle 3D Printer Model' is (stl) file type, size is 99.5KB.
This is a 1-1/4" (ISO 228 thread) thread adapter to a 16mm nozzle with 12mm hole and chamfer on back side.
I used it on a 90° stainless steel elbow, works just fine.
If you add a few turns of PTFE sealing tape on thread won't do no harm (although not needed).
oliva_3_chamfer.stl | 253.9KB |