> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 3417 Series 5mm HTD Pitch Set Screw Pinion Timing Belt Pulley (8mm REX Bore, 24 Tooth)

**Type:** Product page · **SKU:** GB-3417-4008-0024 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/3417-series-5mm-htd-pitch-set-screw-pinion-timing-belt-pulley-8mm-rex-bore-24-tooth.html ([markdown](https://core-electronics.com.au/3417-series-5mm-htd-pitch-set-screw-pinion-timing-belt-pulley-8mm-rex-bore-24-tooth.html.md))

This 24 Tooth 8mm REX bore pinion pulley is specifically for 5mm HTD belt with a width of 9mm or less. The bore matches the profile of our.....

## Pricing

- **Price:** $21.90 (inc GST) — $19.91 AUD, exc GST
- **Quantity discounts:** 10+ $18.91 (exc GST) · 25+ $17.92 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 5700 more in 7–10 days.

## How to buy

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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This 24 Tooth 8mm REX™ bore pinion pulley is specifically for 5mm HTD belt with a width of 9mm or less. The bore matches the profile of 8mm REX™ shafting to create a positive drive. The pair of set-screws lock the pulley from moving axially on the shaft.

Around the 8mm REX™ bore are four thru-holes on the goBILDA® 16mm pattern that allow you to attach this pulley to hubs and other components throughout the goBILDA® build system. The hex counterbores can seat nuts and screw heads, which helps to narrow your pulley assembly’s overall width.

The built-in shim allows this pulley to contact a bearing directly without the need for a separate component between them.

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/3417-4008-0024_62721436f7b.zip)
- [ Spec Sheet ](https://core-electronics.com.au/attachments/localcontent/3417-4008-0024-spec-sheet_17262ce3a7b.pdf)

### Specs

| Weight | 26g |
|---|---|
| Material | Aluminum |
| Finish | Clear Anodized |
| Tooth Count | 24 |
| Pitch | 5mm (HTD) |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-3417-4008-0024-1.jpg)