12mm Hex Hub with 4mm shaft

thingiverse

A versatile 12mm Hex Hub with a 4mm shaft, ideal for low-speed applications that require precision and control. To secure it in place, threads must be tapped to accommodate 3mm grub screws and 4mm wheel bolts. To ensure smooth printing, use ABS or PETG materials. Strategically designed wings or tabs are integrated into the model, allowing it to anchor itself during the printing process, eliminating the need for additional support. For projects that require a 6mm shaft, refer to Thingiverse's 2482939 design. If you're working on a larger project that demands a 17mm Hub, visit Thingiverse's 2482904 page.