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OSG Carbide 3 Flute End Mill Corner Radius TiAlN Coated - Regular Length Centre Cutting For General Applications - 20mm x R3
| Cutter Diameter | 20 |
| Number of Flutes | 3 |
| Flute Length | 38 |
| Overall Length | 102 |
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Description
The OSG Carbide 3 Flute End Mill with Corner Radius is a durable, general‑purpose cutting tool designed for center‑cutting milling, slotting and profiling. With a 20 mm diameter and a 3 mm corner radius, this end mill delivers smooth starts and clean edges across everyday machining tasks, and the regular‑length body adds rigidity for consistent results. The TiAlN coating boosts wear resistance and heat tolerance, while the corner radius promotes smoother cuts and better surface finishes, reducing chatter and improving part quality on a wide range of projects.
- Corner Radius for Smoother Finishes: The R3 corner radius helps produce cleaner edges and smoother contours, reducing chip-out and improving surface quality in profiling and pocketing tasks.
- TiAlN Coating for Extended Life: The TiAlN coating enhances hardness and wear resistance, helping the tool maintain a sharp edge through demanding cuts and delivering longer service life.
- Three-Flute Center-Cutting Design: The 3‑flute configuration provides a balance of rigidity and efficient chip evacuation, with center-cutting geometry and a regular‑length body that support plunging and full‑width cuts in a variety of general machining tasks.
The result is a dependable tool that helps you complete jobs faster, with fewer tool changes and consistently good finishes. The TiAlN coating preserves edge life under demanding cuts, while the corner radius and three‑flute geometry promote smooth cutting and reliable, repeatable results across milling, slotting, and profiling tasks.
Part Numbers
- Protool Part Number
- OSG-403-7874R30
- Brand
- OSG
- Category
- End Mill
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 Carbide 3 Flute End Mill Corner Radius TiAlN Coated - Regular Length Centre Cutting For General Applications
View full collection →You are viewing OSG-403-7874R30. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Corner Radius | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| OSG-403-1575R02 | 4 | 3 | 14 | 51 | 4 | 0.2 | £33.40 | In Stock | |
| OSG-403-1575R025 | 4 | 3 | 14 | 51 | 4 | 0.25 | £33.40 | In Stock | |
| OSG-403-1575R04 | 4 | 3 | 14 | 51 | 4 | 0.4 | £33.40 | In Stock | |
| OSG-403-1575R05 | 4 | 3 | 14 | 51 | 4 | 0.5 | £33.40 | In Stock | |
| OSG-403-1575R075 | 4 | 3 | 14 | 51 | 4 | 0.75 | £33.40 | In Stock | |
| OSG-403-1575R10 | 4 | 3 | 14 | 51 | 4 | 1 | £33.40 | In Stock | |
| OSG-403-1575R15 | 4 | 3 | 14 | 51 | 4 | 1.5 | £33.40 | In Stock | |
| OSG-403-1968R025 | 5 | 3 | 16 | 51 | 5 | 0.25 | £36.20 | In Stock | |
| OSG-403-1968R05 | 5 | 3 | 16 | 51 | 5 | 0.5 | £36.20 | In Stock | |
| OSG-403-1968R075 | 5 | 3 | 16 | 51 | 5 | 0.75 | £36.20 | In Stock | |
| OSG-403-1968R10 | 5 | 3 | 16 | 51 | 5 | 1 | £36.20 | In Stock | |
| OSG-403-1968R125 | 5 | 3 | 16 | 51 | 5 | 1.25 | £36.20 | In Stock | |
| OSG-403-1968R15 | 5 | 3 | 16 | 51 | 5 | 1.5 | £36.20 | In Stock | |
| OSG-403-1968R20 | 5 | 3 | 16 | 51 | 5 | 2 | £36.20 | In Stock | |
| OSG-403-2362R02 | 6 | 3 | 19 | 64 | 6 | 0.2 | £45.20 | In Stock | |
| OSG-403-2362R025 | 6 | 3 | 19 | 64 | 6 | 0.25 | £45.20 | In Stock | |
| OSG-403-2362R05 | 6 | 3 | 19 | 64 | 6 | 0.5 | £45.20 | In Stock | |
| OSG-403-2362R075 | 6 | 3 | 19 | 64 | 6 | 0.75 | £45.20 | In Stock | |
| OSG-403-2362R08 | 6 | 3 | 19 | 64 | 6 | 0.8 | £45.20 | In Stock | |
| OSG-403-2362R10 | 6 | 3 | 19 | 64 | 6 | 1 | £45.20 | In Stock | |
| OSG-403-2362R125 | 6 | 3 | 19 | 64 | 6 | 1.25 | £45.20 | In Stock | |
| OSG-403-2362R15 | 6 | 3 | 19 | 64 | 6 | 1.5 | £45.20 | In Stock | |
| OSG-403-2362R20 | 6 | 3 | 19 | 64 | 6 | 2 | £45.20 | In Stock | |
| OSG-403-3150R02 | 8 | 3 | 21 | 64 | 8 | 0.2 | £53.54 | In Stock | |
| OSG-403-3150R025 | 8 | 3 | 21 | 64 | 8 | 0.25 | £53.54 | In Stock | |
| OSG-403-3150R03 | 8 | 3 | 21 | 64 | 8 | 0.3 | £53.54 | In Stock | |
| OSG-403-3150R05 | 8 | 3 | 21 | 64 | 8 | 0.5 | £53.54 | In Stock | |
| OSG-403-3150R075 | 8 | 3 | 21 | 64 | 8 | 0.75 | £53.54 | In Stock | |
| OSG-403-3150R08 | 8 | 3 | 21 | 64 | 8 | 0.8 | £53.54 | In Stock | |
| OSG-403-3150R10 | 8 | 3 | 21 | 64 | 8 | 1 | £53.54 | In Stock | |
| OSG-403-3150R125 | 8 | 3 | 21 | 64 | 8 | 1.25 | £53.54 | In Stock | |
| OSG-403-3150R15 | 8 | 3 | 21 | 64 | 8 | 1.5 | £53.54 | In Stock | |
| OSG-403-3150R20 | 8 | 3 | 21 | 64 | 8 | 2 | £53.54 | In Stock | |
| OSG-403-3150R25 | 8 | 3 | 21 | 64 | 8 | 2.5 | £53.54 | In Stock | |
| OSG-403-3150R30 | 8 | 3 | 21 | 64 | 8 | 3 | £53.54 | In Stock | |
| OSG-403-3937R02 | 10 | 3 | 25 | 70 | 10 | 0.2 | £67.66 | In Stock | |
| OSG-403-3937R025 | 10 | 3 | 25 | 70 | 10 | 0.25 | £67.66 | In Stock | |
| OSG-403-3937R04 | 10 | 3 | 25 | 70 | 10 | 0.4 | £67.66 | In Stock | |
| OSG-403-3937R05 | 10 | 3 | 25 | 70 | 10 | 0.5 | £67.66 | In Stock | |
| OSG-403-3937R08 | 10 | 3 | 25 | 70 | 10 | 0.8 | £67.66 | In Stock | |
| OSG-403-3937R10 | 10 | 3 | 25 | 70 | 10 | 1 | £67.66 | In Stock | |
| OSG-403-3937R125 | 10 | 3 | 25 | 70 | 10 | 1.25 | £67.66 | In Stock | |
| OSG-403-3937R15 | 10 | 3 | 25 | 70 | 10 | 1.5 | £67.66 | In Stock | |
| OSG-403-3937R20 | 10 | 3 | 25 | 70 | 10 | 2 | £67.66 | In Stock | |
| OSG-403-3937R25 | 10 | 3 | 25 | 70 | 10 | 2.5 | £67.66 | In Stock | |
| OSG-403-3937R30 | 10 | 3 | 25 | 70 | 10 | 3 | £67.66 | In Stock | |
| OSG-403-3937R32 | 10 | 3 | 25 | 70 | 10 | 3.2 | £67.66 | In Stock | |
| OSG-403-3937R40 | 10 | 3 | 25 | 70 | 10 | 4 | £67.66 | In Stock | |
| OSG-403-4724R02 | 12 | 3 | 25 | 76 | 12 | 0.2 | £105.15 | In Stock | |
| OSG-403-4724R025 | 12 | 3 | 25 | 76 | 12 | 0.25 | £105.15 | In Stock | |
| OSG-403-4724R03 | 12 | 3 | 25 | 76 | 12 | 0.3 | £105.15 | In Stock | |
| OSG-403-4724R05 | 12 | 3 | 25 | 76 | 12 | 0.5 | £105.15 | In Stock | |
| OSG-403-4724R075 | 12 | 3 | 25 | 76 | 12 | 0.75 | £105.15 | In Stock | |
| OSG-403-4724R08 | 12 | 3 | 25 | 76 | 12 | 0.8 | £105.15 | In Stock | |
| OSG-403-4724R10 | 12 | 3 | 25 | 76 | 12 | 1 | £105.15 | In Stock | |
| OSG-403-4724R15 | 12 | 3 | 25 | 76 | 12 | 1.5 | £105.15 | In Stock | |
| OSG-403-4724R20 | 12 | 3 | 25 | 76 | 12 | 2 | £105.15 | In Stock | |
| OSG-403-4724R25 | 12 | 3 | 25 | 76 | 12 | 2.5 | £105.15 | In Stock | |
| OSG-403-4724R30 | 12 | 3 | 25 | 76 | 12 | 3 | £105.15 | In Stock | |
| OSG-403-4724R32 | 12 | 3 | 25 | 76 | 12 | 3.2 | £105.15 | In Stock | |
| OSG-403-4724R40 | 12 | 3 | 25 | 76 | 12 | 4 | £105.15 | In Stock | |
| OSG-403-6299R05 | 16 | 3 | 32 | 89 | 16 | 0.5 | £203.06 | In Stock | |
| OSG-403-6299R10 | 16 | 3 | 32 | 89 | 16 | 1 | £203.06 | In Stock | |
| OSG-403-6299R15 | 16 | 3 | 32 | 89 | 16 | 1.5 | £203.06 | In Stock | |
| OSG-403-6299R20 | 16 | 3 | 32 | 89 | 16 | 2 | £203.06 | In Stock | |
| OSG-403-6299R25 | 16 | 3 | 32 | 89 | 16 | 2.5 | £203.06 | In Stock | |
| OSG-403-6299R30 | 16 | 3 | 32 | 89 | 16 | 3 | £203.06 | In Stock | |
| OSG-403-6299R40 | 16 | 3 | 32 | 89 | 16 | 4 | £203.06 | In Stock | |
| OSG-403-6299R50 | 16 | 3 | 32 | 89 | 16 | 5 | £203.06 | In Stock | |
| OSG-403-7874R05 | 20 | 3 | 38 | 102 | 20 | 0.5 | £257.73 | In Stock | |
| OSG-403-7874R10 | 20 | 3 | 38 | 102 | 20 | 1 | £257.73 | In Stock | |
| OSG-403-7874R20 | 20 | 3 | 38 | 102 | 20 | 2 | £257.73 | In Stock | |
| OSG-403-7874R30 Viewing | 20 | 3 | 38 | 102 | 20 | 3 | £257.73 | In Stock | |
| OSG-403-7874R50 | 20 | 3 | 38 | 102 | 20 | 5 | £257.73 | In Stock |
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