# Pololu Universal Aluminum Mounting Hub for 6mm Shaft, \#4-40 Holes (2-Pack)

**Type:** Product page · **SKU:** POLOLU-1083 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-6mm-shaft-4-40-holes-2-pack.html ([markdown](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-6mm-shaft-4-40-holes-2-pack.html.md))

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 6 mm diameter motor shafts. The set includes two hubs, four #4-40 set screws for securing the hubs to motor shafts, and one 0.05″ Allen wrench for use with the set screws. Each hub has six threaded mounting holes for #4-40 screws (not included).

## Pricing

- **Price:** $20.10 (inc GST) — $18.27 AUD, exc GST
- **Quantity discounts:** 10+ $17.55 (exc GST) · 25+ $16.99 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 900 more in 4–7 days.

## Description

These universal mounting hubs are designed to work with most [6 mm diameter shafts](https://core-electronics.com.au/#), including round shafts and “D” shafts. Each of the two included hubs has six mounting holes for [\#4-40 screws](https://core-electronics.com.au/machine-screw-4-40-1-2-length-phillips-25-pack.html) (not included), letting you mount custom wheels or mechanisms to your motors. The four included #4-40 hex set screws (two for each hub) allow secure coupling of shaft to hub, and a [0.05″ hex wrench](https://core-electronics.com.au/hex-allen-wrench-0-05.html) (often the smallest size in SAE Allen wrench sets) is included for use with the set screws. A dimension diagram of the hub is available under the resources tab.

The picture to the right shows a hub with [Pololu’s 19:1 metal gearmotor 37Dx52L mm](https://core-electronics.com.au/19-1-metal-gearmotor-37dx52l-mm.html) and a [Pololu stamped aluminum L-bracket for 37D mm metal gearmotors](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-pair-for-37d-mm-metal-gearmotors.html). These hubs will work with any of our [37D mm metal gearmotors](https://core-electronics.com.au/#), and they also work with 80 mm and 90 mm [Pololu wheels](https://core-electronics.com.au/#).

| Size: | 25.4 mm diameter × 9.2 mm thick |
|---|---|

| \| [![](https://core-electronics.com.au/media/remote_images/0J1108.250_ODNSW3.jpg%3Fd003edcb57980bc5ead6f615d4f868a4)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_GAfhME.png)](https://core-electronics.com.au/#) \| \|---\| \| Gearmotor with bracket and hub. \| | \| [![](https://core-electronics.com.au/media/remote_images/0J2595.250_5IhigB.jpg%3F95be65618507363e4feac18d54979eef)![](https://core-electronics.com.au/media/remote_images/zoom-d0cfc0fffa825c4654893ef42b77cee3_GAfhME.png)](https://core-electronics.com.au/#) \| \|---\|---\| \| Black Pololu 90×10mm wheel on a Pololu 37D mm metal gearmotor. \| |
|---|

**Documents:**

- [Dimensional Drawing](https://core-electronics.com.au/attachments/localcontent/1083-6mm-4-40-hub-dimensions_4729038cbdf.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu_universal_aluminum_mounting_hub_for_6mm_shaft_4_40_holes__2_pack___pololu_1083__00.jpg)