Dispatch Hours
Orders dispatched Monday to Friday between 8am and 5pm (4:30pm on Fridays).
- Mon – Thurs8:00 – 17:00
- Friday8:00 – 16:30
- Sat & SunClosed
Discover the superior performance of OSG Metric A-Spiral Flute Threading Taps, designed for precision in blind hole threading applications. Crafted from high-grade Powder Metal and coated with TiCN, these left-hand taps deliver exceptional durability and wear resistance, ensuring longer tool life and reliable cutting performance. Ideal for machining a variety of materials, OSG's advanced spiral flute design efficiently evacuates chips to prevent clogging, allowing for smoother and more accurate threading in blind holes. Enhance your tooling capabilities with OSG's trusted expertise and commitment to quality.

Click any SKU to view full product details, specifications and datasheets.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48217138 | M3 | 0.5 | 56 | 3.5 | 3 | 371 | £44.98 | In Stock |
|
| OSG-48217144 | M4 | 0.7 | 63 | 4.5 | 3 | 371 | £46.05 | In Stock |
|
| OSG-48217149 | M5 | 0.8 | 70 | 6 | 3 | 371 | £29.61 | In Stock |
|
| OSG-48217155 | M5 | 1 | 80 | 6 | 3 | 371 | £47.90 | In Stock |
|
| OSG-48217161 | M8 | 1.25 | 90 | 8 | 3 | 371 | £57.50 | In Stock |
|
| OSG-48217169 | M10 | 1.5 | 100 | 10 | 3 | 371 | £70.14 | In Stock |
|
| OSG-48217179 | M12 | 1.75 | 110 | 9 | 3 | 376 | £88.37 | In Stock |
|
| OSG-48217191 | M14 | 2 | 110 | 11 | 3 | 376 | £105.29 | In Stock |
|
| OSG-48217202 | M16 | 2 | 110 | 12 | 3 | 376 | £123.78 | In Stock |
|
| OSG-48217214 | M18 | 2.5 | 125 | 14 | 4 | 376 | £167.22 | In Stock |
|
| OSG-48217228 | M20 | 2.5 | 140 | 16 | 4 | 376 | £198.09 | In Stock |
|
| OSG-48217238 | M22 | 2.5 | 140 | 18 | 4 | 376 | £216.31 | In Stock |
|
| OSG-48217247 | M24 | 3 | 160 | 18 | 4 | 376 | £265.59 | In Stock |
|
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Fast dispatch, clear delivery options and a friendly technical team on the end of the phone.
Orders dispatched Monday to Friday between 8am and 5pm (4:30pm on Fridays).
| Service | Cost |
|---|---|
| Royal Mail Tracked 24 | £5.90 |
| DPD Standard Next Day | £8.00 |
| Royal Mail Special Delivery by 1pm | £12.50 |
| DPD Saturday Delivery | £25.00 |
Saturday delivery available on orders placed before 4pm Friday. T&Cs and geographical exclusions apply (Republic of Ireland, Northern Ireland, Scottish Highlands, Channel Islands & others) — see our delivery page for full details.
If an item isn't right, sending it back is simple and hassle-free.
Read our returns policy →Our specialist team can advise on tooling choice, specifications and compatibility.
01732 887334 info@protool-ltd.co.uk