# Pololu Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack)

**Type:** Product page · **SKU:** POLOLU-1998 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-m3-holes-2-pack.html ([markdown](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-m3-holes-2-pack.html.md))

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 5 mm diameter motor shafts. The set includes two hubs, two M3 set screws for securing the hubs to motor shafts, and one 1.5 mm Allen wrench for use with the set screws. Each hub has four threaded mounting holes for M3 screws (not included).

## Pricing

- **Price:** $19.35 (inc GST) — $17.59 AUD, exc GST
- **Quantity discounts:** 10+ $16.89 (exc GST) · 25+ $16.36 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 900 more in 4–7 days.

## Description

| [![](https://core-electronics.com.au/media/remote_images/0J2469.250_9tQK1m.jpg%3Fdc3da73b100ec509676311c0dc5ee4f3)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_K5xtX6.png)](https://core-electronics.com.au/#) |
|---|
| 5mm Pololu universal aluminum mounting hub on a stepper motor with a 5mm-diameter output shaft. |

These universal mounting hubs are designed to work with most 5 mm diameter shafts, including round shafts and “D” shafts, such as those on Pololu's [stepper motors](https://core-electronics.com.au/#). Each of the two included hubs has four mounting holes for [M3 screws](https://core-electronics.com.au/machine-screw-m3-8mm-length-phillips-25-pack.html) (not included), letting you mount custom wheels or mechanisms to your motors. The two included M3 hex set screws (one for each hub) allow secure coupling of shaft to hub, and a 1.5 mm hex wrench is included for use with the set screws. A dimension diagram of the hub is available under the resources tab.

These hubs will work with most of Pololu's [stepper motors](https://core-electronics.com.au/#) (the ones with 5 mm shafts), and they also work with 60 mm, 70 mm, 80 mm, and 90 mm [Pololu wheels](https://core-electronics.com.au/#).

| [![](https://core-electronics.com.au/media/remote_images/0J2763.300_IZWJey.jpg%3F05b54bb3db229f67c35850795c461ea9)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_K5xtX6.png)](https://core-electronics.com.au/#) |
|---|
| Pololu wheels with 90, 80, 70, and 60mm diameters in three colors: blue, red, and yellow. |

**Documents:**

- [Dimensional Drawing](https://core-electronics.com.au/attachments/localcontent/1998-5mm-m3-hub-dimensions_33857ead911.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu_universal_aluminum_mounting_hub_for_5mm_shaft_m3_holes__2_pack___pololu_1998__00.jpg)