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OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 1/2 x 20
| Form | UNF |
| Size | 1/2 |
| Pitch | 20 |
| Flute Length | 29 |
| Shank Diameter | 9 |
| Overall Length | 89 |
Learn more about Klarna
Achieve precise, through-hole UNF threading with the OSG UNF Spiral Point Threading Tap. Built for professional machining, this tap combines robust construction with efficient chip evacuation to deliver reliable, high-quality threads every time.
- UNF Spiral Point Design: Optimized geometry that pushes chips forward and minimizes snagging, ideal for through-hole tapping and clean thread formation.
- Material & Coating: High-Speed Steel with cobalt (HSS-E) for enhanced hardness and heat resistance, paired with a durable Steam Oxide coating for improved wear life.
- Thread Size & Type: 1/2-20 UNF threading tap configured for fine-pitch applications requiring precise, tight threads.
- Through-Hole Capability: Specifically designed for through-hole tapping, enabling full thread depth and consistent performance in production environments.
- Precision & Reliability: OSG’s advanced threading technology delivers consistent thread quality and extended tool life under demanding machining tasks.
Using the OSG UNF Spiral Point Threading Tap translates to smoother cutting action, reduced rework, and dependable performance in critical assemblies. The combination of HSS-E durability and steam-oxide protection helps maintain sharpness and accuracy across multiple jobs, making it a reliable choice for precision threading in metalworking and manufacturing workflows.
| Form | UNF |
| Size | 1/2 |
| Pitch | 20 |
| Flute Length | 29 |
| Shank Diameter | 9 |
| Overall Length | 89 |
| Substrate | HSS-E |
| Style | Spiral Point |
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 - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole
View full collection →You are viewing OSG-22104914. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-22104504 | No. 0 | 80 | 8 | 2.5 | 40 | £126.88 | In Stock | |
| OSG-22104524 | No. 1 | 72 | 8 | 2.5 | 41 | £71.26 | In Stock | |
| OSG-22104544 | No. 2 | 64 | 9.5 | 2.8 | 44.5 | £50.39 | In Stock | |
| OSG-22104564 | No. 3 | 56 | 9.5 | 2.8 | 44.5 | £50.39 | In Stock | |
| OSG-22104584 | No. 4 | 48 | 11 | 3.15 | 48 | £31.02 | In Stock | |
| OSG-22104604 | No. 5 | 44 | 11 | 3.15 | 48 | £31.02 | In Stock | |
| OSG-22104624 | No. 6 | 40 | 13 | 3.55 | 50 | £18.94 | In Stock | |
| OSG-22104654 | No. 8 | 36 | 13 | 4.5 | 53 | £18.94 | 1-2 days | |
| OSG-22104674 | No. 10 | 32 | 16 | 5 | 58 | £18.94 | In Stock | |
| OSG-22104694 | No. 12 | 28 | 17 | 5.6 | 62 | £22.59 | In Stock | |
| OSG-22104724 | 1/4 | 28 | 19 | 6.3 | 66 | £15.81 | In Stock | |
| OSG-22104764 | 5/16 | 24 | 22 | 8 | 72 | £17.88 | In Stock | |
| OSG-22104814 | 3/8 | 24 | 24 | 10 | 80 | £22.59 | In Stock | |
| OSG-22104864 | 7/16 | 20 | 25 | 8 | 85 | £32.50 | In Stock | |
| OSG-22104914 Viewing | 1/2 | 20 | 29 | 9 | 89 | £32.66 | In Stock | |
| OSG-22104964 | 9/16 | 18 | 30 | 11.2 | 95 | £41.36 | In Stock | |
| OSG-22105044 | 5/8 | 18 | 32 | 12.5 | 102 | £48.49 | In Stock | |
| OSG-22105174 | 3/4 | 16 | 37 | 14 | 112 | £72.75 | In Stock | |
| OSG-22105284 | 7/8 | 14 | 38 | 16 | 118 | £100.83 | In Stock | |
| OSG-22105394 | 1 | 12 | 45 | 18 | 130 | £120.78 | 1-2 days | |
| OSG-22105534 | 1.1/8 | 12 | 37 | 20 | 127 | £208.59 | 1-2 days | |
| OSG-22105664 | 1.1/4 | 12 | 37 | 22 | 137 | £267.69 | 1-2 days |
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