Pololu Universal Aluminum Mounting Hub for 3mm Shaft, #4-40 Holes (2-Pack)Pololu
These universal mounting hubs are designed to work with most 3 mm diameter shafts, including round shafts, “D” shafts, and Tamiya’s 3 mm hexagonal shafts. Each of the two included hubs has four mounting holes for #4-40 screws (not included), letting you mount custom wheels or mechanisms to your motors. The two included #4-40 hex set screws (one for each hub) allow secure coupling of shaft to hub, and a 0.05″ hex wrench (often the smallest size in SAE Allen wrench sets) is included for use with the set screws.
- Size: 17.5 mm diameter × 5 mm thick
- Weight: 2.8 g1
- Shaft diameter: 3 mm
- Mounting hole size: #4-402
- 1. For a single hub only (without set screw).
- 2. This is also the size of the set screw.