A solid brass coupling for connecting 3mm shafts to 4mm shafts. Applications include connecting motor to drive shafts in CNC and model making applications. Reducing couplings are part bored from each end, non-reducing couplings are smooth bore all the way through. Each coupling is supplied complete with two M3 grub screws to grip each shaft. Two additional tapped holes are provided at 180 degrees opposite where additional grub screw (not included) fixing security is required. Additional grubs are available here.
Specifications
- Material: Brass
- Length: 20mm
- Overall diameter: 8mm
- Internal diameter 1: 3mm
- Internal diameter 2: 4mm