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OSG Slow Spiral Carbide Drill - Solid - Uncoated - 3.5mm
| Drill Diameter | 3.50 |
| Flute Length | 24 |
| Overall Length | 52 |
| Shank Diameter | 3.5 |
Learn more about Klarna
Description
The OSG Slow Spiral Carbide Drill is a solid carbide cutting tool with a 3.5 mm diameter and an uncoated finish. Its slow-spiral flute design promotes controlled chip evacuation and reduces heat buildup, helping you achieve clean, accurate holes with less surface work.
This drill is ideal for engineers, machinists, technicians, and hobbyists who need reliable performance across a variety of materials. The uncoated surface enhances compatibility with metals, plastics, and composites, delivering steady results in everyday drilling tasks without the complexities of coatings.
- Slow spiral geometry for controlled chip evacuation: Maintains chips away from the cutting edge to minimize heat buildup and prevent workpiece deformation, yielding cleaner holes and less rework.
- Solid carbide, uncoated construction: Provides broad material compatibility and predictable, steady performance across metals, plastics, and composites without coating-related sticking.
- 3.5 mm diameter with durable cutting edge: Delivers consistent hole size and finish, supporting repeatable results and longer tool life in busy production or workshop environments.
Designed for dependable, repeatable drilling, this drill helps you improve workflow, reduce downtime, and maintain high-quality results across a range of materials. Its robust carbide composition and thoughtful geometry translate to reliable performance from first hole to last, making it a trusted choice for professional shops and serious enthusiasts alike.
Part Numbers
- Protool Part Number
- OSG-215-1378
- 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-215-1378. 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 | £13.46 | 1-2 days | |
| OSG-215-4252 | 10.80 | 52 | 87 | 10.8 | Uncoated | NO | £111.35 | 1-2 days | |
| OSG-215-1299 | 3.30 | 24 | 52 | 3.3 | Uncoated | NO | £17.82 | 1-2 days | |
| OSG-215-1181 | 3.00 | 22 | 48 | 3 | Uncoated | NO | £15.11 | 1-2 days | |
| OSG-215-0945 | 2.40 | 21 | 46 | 2.4 | Uncoated | NO | £13.46 | 1-2 days | |
| OSG-215-0906 | 2.30 | 19 | 45 | 2.3 | Uncoated | NO | £13.46 | 1-2 days | |
| OSG-215-0591 | 1.50 | 13 | 38 | 1.5 | Uncoated | NO | £11.23 | 1-2 days | |
| OSG-215-4724 | 12.00 | 54 | 92 | 12 | Uncoated | NO | £125.19 | 1-2 days | |
| OSG-215-4685 | 11.90 | 54 | 92 | 11.9 | Uncoated | NO | £125.19 | 1-2 days | |
| OSG-215-4646 | 11.80 | 54 | 92 | 11.8 | Uncoated | NO | £125.19 | 1-2 days | |
| OSG-215-4606 | 11.70 | 54 | 92 | 11.7 | Uncoated | NO | £125.19 | 1-2 days | |
| OSG-215-4567 | 11.60 | 54 | 92 | 11.6 | Uncoated | NO | £125.19 | 1-2 days | |
| OSG-215-4528 | 11.50 | 54 | 90 | 11.5 | Uncoated | NO | £121.00 | 1-2 days | |
| OSG-215-4488 | 11.40 | 54 | 90 | 11.4 | Uncoated | NO | £121.00 | 1-2 days | |
| OSG-215-4449 | 11.30 | 54 | 90 | 11.3 | Uncoated | NO | £121.00 | 1-2 days | |
| OSG-215-4409 | 11.20 | 54 | 90 | 11.2 | Uncoated | NO | £121.00 | 1-2 days | |
| OSG-215-4370 | 11.10 | 52 | 87 | 11.1 | Uncoated | NO | £121.00 | 1-2 days | |
| OSG-215-4331 | 11.00 | 52 | 87 | 11 | Uncoated | NO | £111.35 | 1-2 days | |
| OSG-215-4291 | 10.90 | 52 | 87 | 10.9 | Uncoated | NO | £111.35 | 1-2 days | |
| OSG-215-4213 | 10.70 | 51 | 86 | 10.7 | Uncoated | NO | £111.35 | 1-2 days | |
| OSG-215-4173 | 10.60 | 51 | 86 | 10.6 | Uncoated | NO | £111.35 | 1-2 days | |
| OSG-215-4134 | 10.50 | 51 | 86 | 10.5 | Uncoated | NO | £96.51 | 1-2 days | |
| OSG-215-4094 | 10.40 | 51 | 86 | 10.4 | Uncoated | NO | £96.51 | 1-2 days | |
| OSG-215-4055 | 10.30 | 49 | 84 | 10.3 | Uncoated | NO | £96.51 | 1-2 days | |
| OSG-215-4016 | 10.20 | 49 | 84 | 10.2 | Uncoated | NO | £96.51 | 1-2 days | |
| OSG-215-3976 | 10.10 | 49 | 84 | 10.1 | Uncoated | NO | £96.51 | 1-2 days | |
| OSG-215-3937 | 10.00 | 48 | 83 | 10 | Uncoated | NO | £89.78 | 1-2 days | |
| OSG-215-3898 | 9.90 | 48 | 83 | 9.9 | Uncoated | NO | £89.78 | 1-2 days | |
| OSG-215-3858 | 9.80 | 48 | 83 | 9.8 | Uncoated | NO | £89.78 | 1-2 days | |
| OSG-215-3819 | 9.70 | 48 | 83 | 9.7 | Uncoated | NO | £89.78 | 1-2 days | |
| OSG-215-3780 | 9.60 | 48 | 83 | 9.6 | Uncoated | NO | £89.78 | 1-2 days | |
| OSG-215-3740 | 9.50 | 46 | 79 | 9.5 | Uncoated | NO | £75.77 | 1-2 days | |
| OSG-215-3701 | 9.40 | 46 | 79 | 9.4 | Uncoated | NO | £75.77 | 1-2 days | |
| OSG-215-3661 | 9.30 | 46 | 79 | 9.3 | Uncoated | NO | £75.77 | 1-2 days | |
| OSG-215-3622 | 9.20 | 46 | 79 | 9.2 | Uncoated | NO | £75.77 | 1-2 days | |
| OSG-215-3583 | 9.10 | 44 | 78 | 9.1 | Uncoated | NO | £75.77 | 1-2 days | |
| OSG-215-3543 | 9.00 | 44 | 78 | 9 | Uncoated | NO | £68.24 | 1-2 days | |
| OSG-215-3504 | 8.90 | 44 | 78 | 8.9 | Uncoated | NO | £68.24 | 1-2 days | |
| OSG-215-3465 | 8.80 | 44 | 78 | 8.8 | Uncoated | NO | £68.24 | 1-2 days | |
| OSG-215-3425 | 8.70 | 43 | 76 | 8.7 | Uncoated | NO | £68.24 | 1-2 days | |
| OSG-215-3386 | 8.60 | 43 | 76 | 8.6 | Uncoated | NO | £68.24 | 1-2 days | |
| OSG-215-3346 | 8.50 | 43 | 76 | 8.5 | Uncoated | NO | £59.01 | 1-2 days | |
| OSG-215-3307 | 8.40 | 43 | 75 | 8.4 | Uncoated | NO | £59.01 | 1-2 days | |
| OSG-215-3268 | 8.30 | 43 | 75 | 8.3 | Uncoated | NO | £59.01 | 1-2 days | |
| OSG-215-3228 | 8.20 | 43 | 75 | 8.2 | Uncoated | NO | £59.01 | 1-2 days | |
| OSG-215-3189 | 8.10 | 43 | 75 | 8.1 | Uncoated | NO | £59.01 | 1-2 days | |
| OSG-215-3150 | 8.00 | 41 | 71 | 8 | Uncoated | NO | £53.85 | 1-2 days | |
| OSG-215-3110 | 7.90 | 41 | 71 | 7.9 | Uncoated | NO | £53.85 | 1-2 days | |
| OSG-215-3071 | 7.80 | 41 | 71 | 7.8 | Uncoated | NO | £53.85 | 1-2 days | |
| OSG-215-3031 | 7.70 | 41 | 71 | 7.7 | Uncoated | NO | £53.85 | 1-2 days | |
| OSG-215-2992 | 7.60 | 41 | 71 | 7.6 | Uncoated | NO | £53.85 | 1-2 days | |
| OSG-215-2953 | 7.50 | 40 | 70 | 7.5 | Uncoated | NO | £47.56 | 1-2 days | |
| OSG-215-2913 | 7.40 | 40 | 70 | 7.4 | Uncoated | NO | £47.56 | 1-2 days | |
| OSG-215-2874 | 7.30 | 40 | 70 | 7.3 | Uncoated | NO | £47.56 | 1-2 days | |
| OSG-215-2835 | 7.20 | 40 | 70 | 7.2 | Uncoated | NO | £47.56 | 1-2 days | |
| OSG-215-2795 | 7.10 | 38 | 69 | 7.1 | Uncoated | NO | £47.56 | 1-2 days | |
| OSG-215-2756 | 7.00 | 38 | 68 | 7 | Uncoated | NO | £43.36 | 1-2 days | |
| OSG-215-2717 | 6.90 | 38 | 68 | 6.9 | Uncoated | NO | £43.36 | 1-2 days | |
| OSG-215-2677 | 6.80 | 38 | 68 | 6.8 | Uncoated | NO | £43.36 | 1-2 days | |
| OSG-215-2638 | 6.70 | 37 | 67 | 6.7 | Uncoated | NO | £43.36 | 1-2 days | |
| OSG-215-2598 | 6.60 | 37 | 67 | 6.6 | Uncoated | NO | £43.36 | 1-2 days | |
| OSG-215-2559 | 6.50 | 35 | 63 | 6.5 | Uncoated | NO | £37.06 | 1-2 days | |
| OSG-215-2520 | 6.40 | 35 | 63 | 6.4 | Uncoated | NO | £37.06 | 1-2 days | |
| OSG-215-2480 | 6.30 | 35 | 63 | 6.3 | Uncoated | NO | £37.06 | 1-2 days | |
| OSG-215-2441 | 6.20 | 35 | 63 | 6.2 | Uncoated | NO | £37.06 | 1-2 days | |
| OSG-215-2402 | 6.10 | 35 | 63 | 6.1 | Uncoated | NO | £37.06 | 1-2 days | |
| OSG-215-2362 | 6.00 | 33 | 61 | 6 | Uncoated | NO | £33.17 | 1-2 days | |
| OSG-215-2323 | 5.90 | 33 | 61 | 5.9 | Uncoated | NO | £33.17 | 1-2 days | |
| OSG-215-2283 | 5.80 | 33 | 61 | 5.8 | Uncoated | NO | £33.17 | 1-2 days | |
| OSG-215-2244 | 5.70 | 33 | 61 | 5.7 | Uncoated | NO | £33.17 | 1-2 days | |
| OSG-215-2205 | 5.60 | 32 | 60 | 5.6 | Uncoated | NO | £33.17 | 1-2 days | |
| OSG-215-2165 | 5.50 | 32 | 60 | 5.5 | Uncoated | NO | £29.38 | 1-2 days | |
| OSG-215-2126 | 5.40 | 32 | 60 | 5.4 | Uncoated | NO | £29.38 | 1-2 days | |
| OSG-215-2087 | 5.30 | 32 | 60 | 5.3 | Uncoated | NO | £29.38 | 1-2 days | |
| OSG-215-2047 | 5.20 | 32 | 60 | 5.2 | Uncoated | NO | £29.38 | 1-2 days | |
| OSG-215-2008 | 5.10 | 30 | 57 | 5.1 | Uncoated | NO | £29.38 | 1-2 days | |
| OSG-215-1968 | 5.00 | 30 | 57 | 5 | Uncoated | NO | £25.89 | 1-2 days | |
| OSG-215-1929 | 4.90 | 30 | 57 | 4.9 | Uncoated | NO | £25.89 | 1-2 days | |
| OSG-215-1890 | 4.80 | 30 | 57 | 4.8 | Uncoated | NO | £25.89 | 1-2 days | |
| OSG-215-1850 | 4.70 | 29 | 55 | 4.7 | Uncoated | NO | £25.89 | 1-2 days | |
| OSG-215-1811 | 4.60 | 29 | 55 | 4.6 | Uncoated | NO | £25.89 | 1-2 days | |
| OSG-215-1772 | 4.50 | 29 | 55 | 4.5 | Uncoated | NO | £23.78 | 1-2 days | |
| OSG-215-1732 | 4.40 | 29 | 55 | 4.4 | Uncoated | NO | £23.78 | 1-2 days | |
| OSG-215-1693 | 4.30 | 25 | 52 | 4.3 | Uncoated | NO | £23.78 | 1-2 days | |
| OSG-215-1654 | 4.20 | 25 | 52 | 4.2 | Uncoated | NO | £23.78 | 1-2 days | |
| OSG-215-1614 | 4.10 | 25 | 52 | 4.1 | Uncoated | NO | £23.78 | 1-2 days | |
| OSG-215-1575 | 4.00 | 25 | 52 | 4 | Uncoated | NO | £20.11 | 1-2 days | |
| OSG-215-1535 | 3.90 | 25 | 52 | 3.9 | Uncoated | NO | £20.11 | 1-2 days | |
| OSG-215-1496 | 3.80 | 25 | 52 | 3.8 | Uncoated | NO | £20.11 | 1-2 days | |
| OSG-215-1457 | 3.70 | 25 | 52 | 3.7 | Uncoated | NO | £20.11 | 1-2 days | |
| OSG-215-1417 | 3.60 | 24 | 52 | 3.6 | Uncoated | NO | £20.11 | 1-2 days | |
| OSG-215-1378 Viewing | 3.50 | 24 | 52 | 3.5 | Uncoated | NO | £17.82 | 1-2 days | |
| OSG-215-1339 | 3.40 | 24 | 52 | 3.4 | Uncoated | NO | £17.82 | 1-2 days | |
| OSG-215-1260 | 3.20 | 24 | 52 | 3.2 | Uncoated | NO | £17.82 | 1-2 days | |
| OSG-215-1220 | 3.10 | 22 | 48 | 3.1 | Uncoated | NO | £17.82 | 1-2 days | |
| OSG-215-1142 | 2.90 | 22 | 48 | 2.9 | Uncoated | NO | £15.11 | 1-2 days | |
| OSG-215-1102 | 2.80 | 22 | 48 | 2.8 | Uncoated | NO | £15.11 | 1-2 days | |
| OSG-215-1063 | 2.70 | 21 | 46 | 2.7 | Uncoated | NO | £15.11 | 1-2 days | |
| OSG-215-1024 | 2.60 | 21 | 46 | 2.6 | Uncoated | NO | £15.11 | 1-2 days | |
| OSG-215-0866 | 2.20 | 19 | 45 | 2.2 | Uncoated | NO | £13.46 | 1-2 days | |
| OSG-215-0827 | 2.10 | 19 | 45 | 2.1 | Uncoated | NO | £13.46 | 1-2 days | |
| OSG-215-0787 | 2.00 | 19 | 45 | 2 | Uncoated | NO | £11.90 | 1-2 days | |
| OSG-215-0748 | 1.90 | 18 | 43 | 1.9 | Uncoated | NO | £11.90 | 1-2 days | |
| OSG-215-0709 | 1.80 | 18 | 43 | 1.8 | Uncoated | NO | £11.90 | 1-2 days | |
| OSG-215-0669 | 1.70 | 18 | 43 | 1.7 | Uncoated | NO | £11.90 | 1-2 days | |
| OSG-215-0630 | 1.60 | 18 | 43 | 1.6 | Uncoated | NO | £11.90 | 1-2 days | |
| OSG-215-0551 | 1.40 | 13 | 38 | 1.4 | Uncoated | NO | £12.45 | 1-2 days | |
| OSG-215-0512 | 1.30 | 13 | 38 | 1.3 | Uncoated | NO | £12.45 | 1-2 days | |
| OSG-215-0472 | 1.20 | 13 | 38 | 1.2 | Uncoated | NO | £12.45 | 1-2 days | |
| OSG-215-0433 | 1.10 | 13 | 38 | 1.1 | Uncoated | NO | £12.45 | 1-2 days | |
| OSG-215-0394 | 1.00 | 13 | 38 | 1 | Uncoated | NO | £12.45 | 1-2 days |
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