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OSG Threading Tap - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole - No. 8 x 32
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Description
The OSG UNC Spiral Point Threading Tap is a precision tool built for reliable through-hole threading in metalworking. With HSS‑E (high-speed steel with cobalt) and a durable steam oxide coating, it’s designed to deliver consistent, high‑quality threads and extended tool life in demanding machining tasks.
- Thread form: UNC Spiral Point design for efficient cutting and forward chip evacuation in through-hole tapping.
- Size: No. 8 x 32 UNC, a standard coarse thread used in a wide range ofThrough-Hole applications.
- Material: HSS‑E (high-speed steel with cobalt) for enhanced hardness and wear resistance under high cutting speeds.
- Coating: Steam oxide finish that improves wear resistance and helps protect the tool in tough environments.
- Through-hole design: Optimized specifically for through-hole tapping, delivering clean thread engagement and better hole alignment.
This tap enables precise thread formation with reduced risk of over-cutting or chatter, making it ideal for production runs and critical assemblies. The combination of cobalt-enhanced HSS and a steam oxide coating supports sustained cutting performance, even in tougher metals, while the spiral point geometry promotes smooth chip flow away from the cutting edge. For shops and operators who require dependable No. 8 UNC threads in through-holes, this tap offers a balanced blend of durability, efficiency, and accuracy.
Part Numbers
- Protool Part Number
- OSG-23104644
- Brand
- OSG
- Category
- Threading Tap
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: OSG Threading Taps - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole
View full collection →You are viewing OSG-23104644. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-23104574 | No. 4 | 40 | 11 | 3.15 | 48 | £62.06 | 1-2 days | |
| OSG-23104594 | No. 5 | 40 | 11 | 3.15 | 48 | £62.06 | 1-2 days | |
| OSG-23104614 | No. 6 | 32 | 13 | 3.55 | 50 | £37.89 | In Stock | |
| OSG-23104644 Viewing | No. 8 | 32 | 13 | 4.5 | 53 | £37.89 | In Stock | |
| OSG-23104664 | No. 10 | 24 | 16 | 5 | 58 | £37.89 | 1-2 days | |
| OSG-23104714 | 1/4 | 20 | 19 | 6.3 | 66 | £31.62 | In Stock | |
| OSG-23104744 | 5/16 | 18 | 22 | 8 | 72 | £35.80 | In Stock | |
| OSG-23104794 | 3/8 | 16 | 24 | 10 | 80 | £45.19 | In Stock | |
| OSG-23104894 | 1/2 | 13 | 29 | 9 | 89 | £65.34 | 1-2 days |
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