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OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 7/8 x 14
| Form | UNF |
| Size | 7/8 |
| Pitch | 14 |
| Flute Length | 38 |
| Shank Diameter | 16 |
| Overall Length | 118 |
Learn more about Klarna
The OSG UNF Spiral Point Threading Tap is built for precision through-hole threading in demanding production environments. Crafted from HSS-E cobalt and finished with a steam oxide coating, this tap combines outstanding hardness, heat resistance, and durability to deliver consistent, high-quality threads.
- Thread Form: UNF spiral point design optimized for through-hole tapping, promoting efficient forward chip evacuation.
- Material: High-speed steel with cobalt (HSS-E) for enhanced hardness and heat tolerance during prolonged use.
- Coating: Steam oxide coating adds durability and corrosion resistance, helping the tool withstand demanding machining conditions.
- Size: 7/8" major diameter with 14 threads per inch (7/8 x 14 UNF) for precise, fine-pitch threading.
- Flute Design: Spiral point features tailored geometry to push chips out of the hole, reducing clogging and improving surface finish.
- Application: Ideal for through-hole applications where clean, accurate UNF threads are critical and fast, reliable threading is required.
This threading tap is designed to maintain sharpness and achieve repeatable results across production runs. The combination of HSS-E cobalt and steam oxide coating supports longer tool life, steady performance under heat, and precise thread profiles, making it a dependable choice for critical machining tasks.
| Form | UNF |
| Size | 7/8 |
| Pitch | 14 |
| Flute Length | 38 |
| Shank Diameter | 16 |
| Overall Length | 118 |
| 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-22105284. 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 | 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 Viewing | 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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