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OSG Threading Tap Metric A- Spiral Flute - LH Powder Metal Left Hand - TiCN Coated - Blind Holes DIN371 - M3 x 0.5
| Size | M3 |
| Pitch | 0.5 |
| Overall Length | 56 |
| Threading Length | 4 |
| Reach | 18 |
| Shank Diameter | 3.5 |
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The OSG Metric A-Spiral Flute Threading Tap is a precision left‑hand tap designed for clean, reliable blind‑hole threading in metric sizes. Built for machinists and shops that demand durability and consistency, it delivers steady performance in tight tolerance work.
- Thread Type: Left‑hand (LH) M3 x 0.5 threading for reverse‑direction applications and specific assembly requirements
- Size / Pitch: Metric M3 with 0.5 mm pitch, DIN371 compliant for standardization and compatibility
- Material: Powder Metal substrate for toughness and wear resistance under demanding cutting conditions
- Coating: TiCN coating to enhance tool life and reduce wear during frequent, precision cuts
- Flute Design: A‑Spiral flute engineered for efficient chip evacuation in blind holes, minimizing clogging and heat buildup
- Application: Ideal for blind‑hole threading across a range of materials where precise metric left‑hand threads are required
- Standards: DIN371 specification supporting reliable interchangeability with other DIN371 taps
The combination of a TiCN coating and powder‑metal substrate provides strong wear resistance and extended tool life, helping you achieve consistent thread quality with fewer insertions and rework. The A‑Spiral flute’s optimized chip flow reduces the risk of built‑up material in deep or recessed holes, translating to smoother operation and tighter control over thread dimensions. Designed specifically for left‑hand threaded components, this tap ensures dependable performance in reverse‑thread assemblies or specialized fastener systems, while DIN371 compatibility keeps your tooling ecosystem cohesive and easy to replace.
| Size | M3 |
| Pitch | 0.5 |
| Overall Length | 56 |
| Threading Length | 4 |
| Reach | 18 |
| Shank Diameter | 3.5 |
| Square | 2.7 |
| Flutes | 3 |
| DIN | 371 |
| Thread Direction | Left Hand |
| Substrate | Powder Metal |
| Coating | TiCN |
| Style | Spiral Flute |
| Form | Metric |
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 Metric A- Spiral Flute - LH Powder Metal Left Hand - TiCN Coated - Blind Holes
View full collection →You are viewing OSG-48217138. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Shank Diameter | Flutes | DIN | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-48217138 Viewing | 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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