{"title":"Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)","handle":"pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack","url":"/products/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack","description":"These universal aluminium mounting hubs from Pololu are designed to securely couple custom wheels, mechanisms, and other components to 5 mm diameter motor shafts — including round and D-shaped shafts. Each hub features four #4-40 mounting holes for attaching wheels or custom parts, and a #4-40 hex set screw locks the hub firmly to the shaft.\n\nThe hubs are compatible with most stepper motors that have a 5 mm output shaft, and they work with Pololu's 60 mm, 70 mm, 80 mm, and 90 mm wheels.\n\nKey Features\n\n\n5 mm Shaft Compatibility – Fits round and D-shaped shafts\n\n4× #4-40 Mounting Holes – Attach wheels, brackets, or custom mechanisms\n\nSet Screw Locking – #4-40 hex set screw for secure shaft coupling\n\nAluminium Construction – Lightweight and durable\n\nHex Wrench Included – 0.05\" wrench for the set screws\n\n\nIdeal For\n\nMounting custom wheels to stepper motors\nCoupling mechanisms to 5 mm motor shafts\nRobotics and motorised platform builds\n\n\nPackage Contents\n\n2× Universal Aluminium Mounting Hubs (5 mm bore)\n2× #4-40 Hex Set Screws\n1× 0.05\" Hex Wrench\n","vendor":"Pololu","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":11193,"title":"Default Title","sku":"PL-1203","price":19.01,"compare_at_price":0.0,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}