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OSG Threading Tap - UNC Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1 x 8
| Form | UNC |
| Size | 1 |
| Pitch | 8 |
| Flute Length | 45 |
| Shank Diameter | 18 |
| Overall Length | 130 |
Learn more about Klarna
The OSG UNC Spiral Flute Threading Tap is engineered for precise internal threading in blind holes, delivering dependable performance for professional machining tasks. Crafted from HSS-E cobalt and finished with a Steam Oxide coating, it combines durability with efficient cutting action for long-lasting accuracy.
- Thread Size: UNC 1 x 8
- Material: HSS‑E (high-speed steel with cobalt) for enhanced heat resistance and longevity
- Coating: Steam oxide coating provides wear resistance and reduced friction
- Flute Design: Spiral flute facilitates efficient chip evacuation in blind holes
- Application: Ideal for internal threading in blind-hole applications
- Quality: OSG precision threading tap engineered for accurate thread form and extended tool life
Designed for repeatable, high-quality results, this tap creates clean UNC threads with minimal chatter and reliable performance across challenging materials. The spiral flute reduces chip buildup in deep, restricted holes, while the HSS‑E cobalt core and Steam Oxide coating resist wear and heat, helping the tap last longer between regrinds or replacements. Whether you’re performing production runs or on-demand repairs, this tap supports consistent thread quality and operational efficiency.
| Form | UNC |
| Size | 1 |
| Pitch | 8 |
| Flute Length | 45 |
| Shank Diameter | 18 |
| Overall Length | 130 |
| Substrate | HSS-E |
| Style | Spiral Flute |
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 Flute HSS-E - Steam Oxide Coated - Blind Hole
View full collection →You are viewing OSG-22205384. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22204534 | No. 2 | 56 | 9.5 | 2.8 | 44.5 | £64.30 | In Stock | |
| OSG-22204554 | No. 3 | 48 | 9.5 | 2.8 | 44.5 | £64.30 | In Stock | |
| OSG-22204574 | No. 4 | 40 | 11 | 3.15 | 48 | £39.97 | In Stock | |
| OSG-22204594 | No. 5 | 40 | 11 | 3.15 | 48 | £39.97 | 1-2 days | |
| OSG-22204614 | No. 6 | 32 | 13 | 3.55 | 50 | £24.13 | In Stock | |
| OSG-22204644 | No. 8 | 32 | 13 | 4.5 | 53 | £24.13 | In Stock | |
| OSG-22204664 | No. 10 | 24 | 16 | 5 | 58 | £24.13 | In Stock | |
| OSG-22204684 | No. 12 | 24 | 17 | 5.6 | 62 | £29.55 | 1-2 days | |
| OSG-22204714 | 1/4 | 20 | 19 | 6.3 | 66 | £20.00 | In Stock | |
| OSG-22204744 | 5/16 | 18 | 22 | 8 | 72 | £23.19 | In Stock | |
| OSG-22204794 | 3/8 | 16 | 24 | 10 | 80 | £29.55 | In Stock | |
| OSG-22204844 | 7/16 | 14 | 25 | 8 | 85 | £41.11 | In Stock | |
| OSG-22204894 | 1/2 | 13 | 29 | 9 | 89 | £41.63 | In Stock | |
| OSG-22204944 | 9/16 | 12 | 30 | 11.2 | 95 | £53.03 | In Stock | |
| OSG-22205014 | 5/8 | 11 | 32 | 12.5 | 102 | £61.69 | In Stock | |
| OSG-22205154 | 3/4 | 10 | 37 | 14 | 112 | £92.73 | In Stock | |
| OSG-22205264 | 7/8 | 9 | 38 | 16 | 118 | £128.64 | In Stock | |
| OSG-22205384 Viewing | 1 | 8 | 45 | 18 | 130 | £154.71 | In Stock | |
| OSG-22205514 | 1.1/8 | 7 | 48 | 20 | 138 | £265.95 | 1-2 days | |
| OSG-22205644 | 1.1/4 | 7 | 51 | 22.4 | 151 | £338.98 | In Stock |
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