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OSG Threading Tap - UNC Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1.1/8 x 7
| Form | UNC |
| Size | 1.1/8 |
| Pitch | 7 |
| Flute Length | 48 |
| Shank Diameter | 20 |
| Overall Length | 138 |
Learn more about Klarna
The OSG UNC Spiral Flute Threading Tap is a precision tool designed for professionals who need reliable, accurate threads in blind holes. Crafted from HSS-E cobalt and finished with a durable steam oxide coating, it delivers strong performance in demanding metalworking tasks.
- Size & Thread: 1-1/8" diameter with 7 UNC threads per inch, optimized for blind-hole applications.
- Material: HSS‑E (high-speed steel with cobalt) for enhanced hardness and heat resistance during tapping.
- Coating: Steam oxide coating provides wear resistance and reduced friction for longer tool life.
- Flute Design: Spiral flute geometry promotes efficient chip evacuation, minimizing binding in deep or narrow blind holes.
- Application: Ideal for precise threading in metals such as steel and cast iron in blind-hole scenarios.
- Quality & Consistency: Backed by OSG’s advanced threading technology to deliver accurate threads and repeatable results.
This tap helps you produce clean, accurate threads with controlled starting torque and reduced risk of cross-threading in blind holes. The combination of cobalt-enhanced HSS, steam-oxide coating, and spiral-flute geometry translates to longer tool life, improved heat management, and fewer interruptions during critical machining tasks. A reliable choice for automotive, industrial maintenance, and general fabrication projects where dependable, high-quality threads are essential.
| Form | UNC |
| Size | 1.1/8 |
| Pitch | 7 |
| Flute Length | 48 |
| Shank Diameter | 20 |
| Overall Length | 138 |
| 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-22205514. 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 | 1 | 8 | 45 | 18 | 130 | £154.71 | In Stock | |
| OSG-22205514 Viewing | 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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