For easy tightening and release of SMA / RP-SMA -connectors from R/C equipment.
Coupling torque values of 0.5 - 1.1 Nm are recommended by the connector manufacturers.
I recommend printing at least four of these at the time.
- even with ABS continuous cooling was needed to prevent deforming
- 0.1mm clearance might be too much for PLA prints so there's another file with zero clearance
UPDATE: With Basjohan's remix you can also make a customized version.
0.1 - 0.25 mm layer height
Test printed with 0.25mm layer height, 0.4mm nozzle, 30% infill, PrimaABS.