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OSG Slow Spiral Carbide Drill - Solid - Uncoated - 3.9mm
| Drill Diameter | 3.90 |
| Flute Length | 25 |
| Overall Length | 52 |
| Shank Diameter | 3.9 |
Learn more about Klarna
Description
The OSG Slow Spiral Carbide Drill is a solid carbide cutting tool engineered for precision drilling with a 3.9 mm diameter. It’s designed for professionals and serious hobbyists who demand clean, accurate holes across a wide range of materials, including metals, plastics, and composites. The slow spiral flute promotes controlled chip evacuation and minimizes workpiece stress, helping you achieve consistent hole quality with fewer reworks.
Its uncoated surface keeps the tool versatile and straightforward to use in everyday setups, offering reliable performance without the complexities coatings can introduce. The rugged carbide core delivers enduring sharpness and wear resistance for longer life in demanding drilling tasks.
- Controlled chip evacuation with slow spiral geometry: The extended flute and gentle helix move chips away from the cutting edge, reducing heat, preventing burrs, and delivering smoother hole entrances.
- Rigid solid carbide construction: Hardened, wear‑resistant tip maintains sharpness longer, delivering consistent hole size and finish even after many holes.
- Uncoated versatility across materials: Optimized for a broad range of substrates without coating-related compatibility issues, making it suitable for metals, plastics, and composites in mixed-material workflows.
By choosing the OSG Slow Spiral Carbide Drill, you gain a dependable, versatile drilling solution that supports steady production, reduces interruptions due to tool wear, and helps you achieve precise hole sizes more consistently—whether you’re finishing a precision part, building a prototype, or performing routine maintenance on equipment.
Part Numbers
- Protool Part Number
- OSG-215-1535
- Brand
- OSG
- Category
- Drill
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 Slow Spiral Carbide Drill - Solid - Uncoated
View full collection →You are viewing OSG-215-1535. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Coated | Coolant | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-215-0984 | 2.50 | 21 | 46 | 2.5 | Uncoated | NO | £11.96 | 1-2 days | |
| OSG-215-4252 | 10.80 | 52 | 87 | 10.8 | Uncoated | NO | £98.98 | 1-2 days | |
| OSG-215-1299 | 3.30 | 24 | 52 | 3.3 | Uncoated | NO | £15.83 | 1-2 days | |
| OSG-215-1181 | 3.00 | 22 | 48 | 3 | Uncoated | NO | £13.43 | 1-2 days | |
| OSG-215-0945 | 2.40 | 21 | 46 | 2.4 | Uncoated | NO | £11.96 | 1-2 days | |
| OSG-215-0906 | 2.30 | 19 | 45 | 2.3 | Uncoated | NO | £11.96 | 1-2 days | |
| OSG-215-0591 | 1.50 | 13 | 38 | 1.5 | Uncoated | NO | £9.98 | 1-2 days | |
| OSG-215-4724 | 12.00 | 54 | 92 | 12 | Uncoated | NO | £111.28 | 1-2 days | |
| OSG-215-4685 | 11.90 | 54 | 92 | 11.9 | Uncoated | NO | £111.28 | 1-2 days | |
| OSG-215-4646 | 11.80 | 54 | 92 | 11.8 | Uncoated | NO | £111.28 | 1-2 days | |
| OSG-215-4606 | 11.70 | 54 | 92 | 11.7 | Uncoated | NO | £111.28 | 1-2 days | |
| OSG-215-4567 | 11.60 | 54 | 92 | 11.6 | Uncoated | NO | £111.28 | 1-2 days | |
| OSG-215-4528 | 11.50 | 54 | 90 | 11.5 | Uncoated | NO | £107.56 | 1-2 days | |
| OSG-215-4488 | 11.40 | 54 | 90 | 11.4 | Uncoated | NO | £107.56 | 1-2 days | |
| OSG-215-4449 | 11.30 | 54 | 90 | 11.3 | Uncoated | NO | £107.56 | 1-2 days | |
| OSG-215-4409 | 11.20 | 54 | 90 | 11.2 | Uncoated | NO | £107.56 | 1-2 days | |
| OSG-215-4370 | 11.10 | 52 | 87 | 11.1 | Uncoated | NO | £107.56 | 1-2 days | |
| OSG-215-4331 | 11.00 | 52 | 87 | 11 | Uncoated | NO | £98.98 | 1-2 days | |
| OSG-215-4291 | 10.90 | 52 | 87 | 10.9 | Uncoated | NO | £98.98 | 1-2 days | |
| OSG-215-4213 | 10.70 | 51 | 86 | 10.7 | Uncoated | NO | £98.98 | 1-2 days | |
| OSG-215-4173 | 10.60 | 51 | 86 | 10.6 | Uncoated | NO | £98.98 | 1-2 days | |
| OSG-215-4134 | 10.50 | 51 | 86 | 10.5 | Uncoated | NO | £85.78 | 1-2 days | |
| OSG-215-4094 | 10.40 | 51 | 86 | 10.4 | Uncoated | NO | £85.78 | 1-2 days | |
| OSG-215-4055 | 10.30 | 49 | 84 | 10.3 | Uncoated | NO | £85.78 | 1-2 days | |
| OSG-215-4016 | 10.20 | 49 | 84 | 10.2 | Uncoated | NO | £85.78 | 1-2 days | |
| OSG-215-3976 | 10.10 | 49 | 84 | 10.1 | Uncoated | NO | £85.78 | 1-2 days | |
| OSG-215-3937 | 10.00 | 48 | 83 | 10 | Uncoated | NO | £79.81 | 1-2 days | |
| OSG-215-3898 | 9.90 | 48 | 83 | 9.9 | Uncoated | NO | £79.81 | 1-2 days | |
| OSG-215-3858 | 9.80 | 48 | 83 | 9.8 | Uncoated | NO | £79.81 | 1-2 days | |
| OSG-215-3819 | 9.70 | 48 | 83 | 9.7 | Uncoated | NO | £79.81 | 1-2 days | |
| OSG-215-3780 | 9.60 | 48 | 83 | 9.6 | Uncoated | NO | £79.81 | 1-2 days | |
| OSG-215-3740 | 9.50 | 46 | 79 | 9.5 | Uncoated | NO | £67.35 | 1-2 days | |
| OSG-215-3701 | 9.40 | 46 | 79 | 9.4 | Uncoated | NO | £67.35 | 1-2 days | |
| OSG-215-3661 | 9.30 | 46 | 79 | 9.3 | Uncoated | NO | £67.35 | 1-2 days | |
| OSG-215-3622 | 9.20 | 46 | 79 | 9.2 | Uncoated | NO | £67.35 | 1-2 days | |
| OSG-215-3583 | 9.10 | 44 | 78 | 9.1 | Uncoated | NO | £67.35 | 1-2 days | |
| OSG-215-3543 | 9.00 | 44 | 78 | 9 | Uncoated | NO | £60.66 | 1-2 days | |
| OSG-215-3504 | 8.90 | 44 | 78 | 8.9 | Uncoated | NO | £60.66 | 1-2 days | |
| OSG-215-3465 | 8.80 | 44 | 78 | 8.8 | Uncoated | NO | £60.66 | 1-2 days | |
| OSG-215-3425 | 8.70 | 43 | 76 | 8.7 | Uncoated | NO | £60.66 | 1-2 days | |
| OSG-215-3386 | 8.60 | 43 | 76 | 8.6 | Uncoated | NO | £60.66 | 1-2 days | |
| OSG-215-3346 | 8.50 | 43 | 76 | 8.5 | Uncoated | NO | £52.46 | 1-2 days | |
| OSG-215-3307 | 8.40 | 43 | 75 | 8.4 | Uncoated | NO | £52.46 | 1-2 days | |
| OSG-215-3268 | 8.30 | 43 | 75 | 8.3 | Uncoated | NO | £52.46 | 1-2 days | |
| OSG-215-3228 | 8.20 | 43 | 75 | 8.2 | Uncoated | NO | £52.46 | 1-2 days | |
| OSG-215-3189 | 8.10 | 43 | 75 | 8.1 | Uncoated | NO | £52.46 | 1-2 days | |
| OSG-215-3150 | 8.00 | 41 | 71 | 8 | Uncoated | NO | £47.86 | 1-2 days | |
| OSG-215-3110 | 7.90 | 41 | 71 | 7.9 | Uncoated | NO | £47.86 | 1-2 days | |
| OSG-215-3071 | 7.80 | 41 | 71 | 7.8 | Uncoated | NO | £47.86 | 1-2 days | |
| OSG-215-3031 | 7.70 | 41 | 71 | 7.7 | Uncoated | NO | £47.86 | 1-2 days | |
| OSG-215-2992 | 7.60 | 41 | 71 | 7.6 | Uncoated | NO | £47.86 | 1-2 days | |
| OSG-215-2953 | 7.50 | 40 | 70 | 7.5 | Uncoated | NO | £42.27 | 1-2 days | |
| OSG-215-2913 | 7.40 | 40 | 70 | 7.4 | Uncoated | NO | £42.27 | 1-2 days | |
| OSG-215-2874 | 7.30 | 40 | 70 | 7.3 | Uncoated | NO | £42.27 | 1-2 days | |
| OSG-215-2835 | 7.20 | 40 | 70 | 7.2 | Uncoated | NO | £42.27 | 1-2 days | |
| OSG-215-2795 | 7.10 | 38 | 69 | 7.1 | Uncoated | NO | £42.27 | 1-2 days | |
| OSG-215-2756 | 7.00 | 38 | 68 | 7 | Uncoated | NO | £38.54 | 1-2 days | |
| OSG-215-2717 | 6.90 | 38 | 68 | 6.9 | Uncoated | NO | £38.54 | 1-2 days | |
| OSG-215-2677 | 6.80 | 38 | 68 | 6.8 | Uncoated | NO | £38.54 | 1-2 days | |
| OSG-215-2638 | 6.70 | 37 | 67 | 6.7 | Uncoated | NO | £38.54 | 1-2 days | |
| OSG-215-2598 | 6.60 | 37 | 67 | 6.6 | Uncoated | NO | £38.54 | 1-2 days | |
| OSG-215-2559 | 6.50 | 35 | 63 | 6.5 | Uncoated | NO | £32.94 | 1-2 days | |
| OSG-215-2520 | 6.40 | 35 | 63 | 6.4 | Uncoated | NO | £32.94 | 1-2 days | |
| OSG-215-2480 | 6.30 | 35 | 63 | 6.3 | Uncoated | NO | £32.94 | 1-2 days | |
| OSG-215-2441 | 6.20 | 35 | 63 | 6.2 | Uncoated | NO | £32.94 | 1-2 days | |
| OSG-215-2402 | 6.10 | 35 | 63 | 6.1 | Uncoated | NO | £32.94 | 1-2 days | |
| OSG-215-2362 | 6.00 | 33 | 61 | 6 | Uncoated | NO | £29.48 | 1-2 days | |
| OSG-215-2323 | 5.90 | 33 | 61 | 5.9 | Uncoated | NO | £29.48 | 1-2 days | |
| OSG-215-2283 | 5.80 | 33 | 61 | 5.8 | Uncoated | NO | £29.48 | 1-2 days | |
| OSG-215-2244 | 5.70 | 33 | 61 | 5.7 | Uncoated | NO | £29.48 | 1-2 days | |
| OSG-215-2205 | 5.60 | 32 | 60 | 5.6 | Uncoated | NO | £29.48 | 1-2 days | |
| OSG-215-2165 | 5.50 | 32 | 60 | 5.5 | Uncoated | NO | £26.11 | 1-2 days | |
| OSG-215-2126 | 5.40 | 32 | 60 | 5.4 | Uncoated | NO | £26.11 | 1-2 days | |
| OSG-215-2087 | 5.30 | 32 | 60 | 5.3 | Uncoated | NO | £26.11 | 1-2 days | |
| OSG-215-2047 | 5.20 | 32 | 60 | 5.2 | Uncoated | NO | £26.11 | 1-2 days | |
| OSG-215-2008 | 5.10 | 30 | 57 | 5.1 | Uncoated | NO | £26.11 | 1-2 days | |
| OSG-215-1968 | 5.00 | 30 | 57 | 5 | Uncoated | NO | £23.02 | 1-2 days | |
| OSG-215-1929 | 4.90 | 30 | 57 | 4.9 | Uncoated | NO | £23.02 | 1-2 days | |
| OSG-215-1890 | 4.80 | 30 | 57 | 4.8 | Uncoated | NO | £23.02 | 1-2 days | |
| OSG-215-1850 | 4.70 | 29 | 55 | 4.7 | Uncoated | NO | £23.02 | 1-2 days | |
| OSG-215-1811 | 4.60 | 29 | 55 | 4.6 | Uncoated | NO | £23.02 | 1-2 days | |
| OSG-215-1772 | 4.50 | 29 | 55 | 4.5 | Uncoated | NO | £21.14 | 1-2 days | |
| OSG-215-1732 | 4.40 | 29 | 55 | 4.4 | Uncoated | NO | £21.14 | 1-2 days | |
| OSG-215-1693 | 4.30 | 25 | 52 | 4.3 | Uncoated | NO | £21.14 | 1-2 days | |
| OSG-215-1654 | 4.20 | 25 | 52 | 4.2 | Uncoated | NO | £21.14 | 1-2 days | |
| OSG-215-1614 | 4.10 | 25 | 52 | 4.1 | Uncoated | NO | £21.14 | 1-2 days | |
| OSG-215-1575 | 4.00 | 25 | 52 | 4 | Uncoated | NO | £17.88 | 1-2 days | |
| OSG-215-1535 Viewing | 3.90 | 25 | 52 | 3.9 | Uncoated | NO | £17.88 | 1-2 days | |
| OSG-215-1496 | 3.80 | 25 | 52 | 3.8 | Uncoated | NO | £17.88 | 1-2 days | |
| OSG-215-1457 | 3.70 | 25 | 52 | 3.7 | Uncoated | NO | £17.88 | 1-2 days | |
| OSG-215-1417 | 3.60 | 24 | 52 | 3.6 | Uncoated | NO | £17.88 | 1-2 days | |
| OSG-215-1378 | 3.50 | 24 | 52 | 3.5 | Uncoated | NO | £15.83 | 1-2 days | |
| OSG-215-1339 | 3.40 | 24 | 52 | 3.4 | Uncoated | NO | £15.83 | 1-2 days | |
| OSG-215-1260 | 3.20 | 24 | 52 | 3.2 | Uncoated | NO | £15.83 | 1-2 days | |
| OSG-215-1220 | 3.10 | 22 | 48 | 3.1 | Uncoated | NO | £15.83 | 1-2 days | |
| OSG-215-1142 | 2.90 | 22 | 48 | 2.9 | Uncoated | NO | £13.43 | 1-2 days | |
| OSG-215-1102 | 2.80 | 22 | 48 | 2.8 | Uncoated | NO | £13.43 | 1-2 days | |
| OSG-215-1063 | 2.70 | 21 | 46 | 2.7 | Uncoated | NO | £13.43 | 1-2 days | |
| OSG-215-1024 | 2.60 | 21 | 46 | 2.6 | Uncoated | NO | £13.43 | 1-2 days | |
| OSG-215-0866 | 2.20 | 19 | 45 | 2.2 | Uncoated | NO | £11.96 | 1-2 days | |
| OSG-215-0827 | 2.10 | 19 | 45 | 2.1 | Uncoated | NO | £11.96 | 1-2 days | |
| OSG-215-0787 | 2.00 | 19 | 45 | 2 | Uncoated | NO | £10.58 | 1-2 days | |
| OSG-215-0748 | 1.90 | 18 | 43 | 1.9 | Uncoated | NO | £10.58 | 1-2 days | |
| OSG-215-0709 | 1.80 | 18 | 43 | 1.8 | Uncoated | NO | £10.58 | 1-2 days | |
| OSG-215-0669 | 1.70 | 18 | 43 | 1.7 | Uncoated | NO | £10.58 | 1-2 days | |
| OSG-215-0630 | 1.60 | 18 | 43 | 1.6 | Uncoated | NO | £10.58 | 1-2 days | |
| OSG-215-0551 | 1.40 | 13 | 38 | 1.4 | Uncoated | NO | £11.07 | 1-2 days | |
| OSG-215-0512 | 1.30 | 13 | 38 | 1.3 | Uncoated | NO | £11.07 | 1-2 days | |
| OSG-215-0472 | 1.20 | 13 | 38 | 1.2 | Uncoated | NO | £11.07 | 1-2 days | |
| OSG-215-0433 | 1.10 | 13 | 38 | 1.1 | Uncoated | NO | £11.07 | 1-2 days | |
| OSG-215-0394 | 1.00 | 13 | 38 | 1 | Uncoated | NO | £11.07 | 1-2 days |
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