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OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 7/16 x 20
| Form | UNF |
| Size | 7/16 |
| Pitch | 20 |
| Flute Length | 25 |
| Shank Diameter | 8 |
| Overall Length | 85 |
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Achieve precise threading for through-hole applications with the OSG UNF Spiral Point Threading Tap. Built from cobalt-enhanced HSS (HSS-E) and finished with a robust steam oxide coating, this tap is designed for durable, high-accuracy UNF 7/16-20 threads in demanding machining tasks.
- Threading Type: UNF Spiral Point design that aids chip evacuation and enables efficient through-hole tapping.
- Material: HSS-E (high-speed steel with cobalt) for improved hot hardness and wear resistance.
- Coating: Steam Oxide coating to reduce friction, enhance lubricity, and extend tool life.
- Size / Pitch: 7/16" x 20 UNF, optimized for through-hole applications.
- Through-Hole Compatibility: Specifically designed for through-hole tapping where chips need to be expelled ahead of the edge.
- Applications: Ideal for steel and alloy workpieces in production runs, repair work, and precision assemblies.
With the OSG UNF Spiral Point Threading Tap, you’ll achieve clean, accurate thread forms and longer tool life in demanding environments. The cobalt-infused HSS-E material withstands higher temperatures, while the steam oxide finish lowers friction and improves lubrication retention. The spiral point geometry directs chips out of the hole, reducing the risk of clogging and ensuring consistent performance across multiple taps. This combination makes it a reliable choice for critical machining tasks that require dependable UNF threads and repeatable results.
| Form | UNF |
| Size | 7/16 |
| Pitch | 20 |
| Flute Length | 25 |
| Shank Diameter | 8 |
| Overall Length | 85 |
| 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-23104814A. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-23104674 | No. 10 | 32 | 16 | 5 | 58 | £37.89 | In Stock | |
| OSG-23104724 | 1/4 | 28 | 19 | 6.3 | 66 | £31.62 | In Stock | |
| OSG-23104764 | 5/16 | 24 | 22 | 8 | 72 | £35.80 | 1-2 days | |
| OSG-23104814 | 3/8 | 24 | 24 | 10 | 80 | £45.19 | 1-2 days | |
| OSG-23104814A Viewing | 7/16 | 20 | 25 | 8 | 85 | £54.61 | 1-2 days | |
| OSG-T9547055 | 1/2 | 20 | 29 | 9 | 89 | £65.34 | 1-2 days |
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