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OSG Carbide 4 Flute End Mill Corner Radius TiSlN Coated - For Exotic Materials - 8mm x R2
| Cutter Diameter | 8 |
| Number of Flutes | 4 |
| Flute Length | 20 |
| Overall Length | 64 |
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Description
The OSG Carbide 4 Flute End Mill is a precision cutting tool designed for machining exotic materials. It features an 8 mm diameter with a 2 mm corner radius (R2) and a 4-flute geometry for stable, efficient material removal.
With a TiSlN coating, this end mill delivers long tool life and excellent wear resistance in demanding applications, helping you push through tough materials with confidence and consistent results.
- R2 Corner Radius for stronger edges: The 2 mm corner radius provides improved edge strength and finishes in tight pockets, reducing chipping and delivering smoother, more repeatable results.
- TiSlN Coating for durability: TiSlN enhances wear resistance and extends tool life, helping maintain sharpness and reducing replacement frequency in exotic materials.
- 4-Flute design for efficient removing and stable cuts: The four-flute geometry balances chip evacuation with rigidity, enabling steady feeds and clean finishes even in challenging materials.
This end mill helps you accelerate production while maintaining accuracy and consistency. Its combination of size, corner radius, coating, and flute count is designed to deliver reliable performance, reduce downtime, and produce repeatable results across demanding machining tasks.
Part Numbers
- Protool Part Number
- OSG-501-3150R20
- 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 4 Flute End Mill Corner Radius TiSlN Coated - For Exotic Materials
View full collection →You are viewing OSG-501-3150R20. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Reach | Neck Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|---|
| OSG-501-1181R03 | 3 | 4 | 8 | 58 | 6 | 0.3 | £38.91 | In Stock | ||
| OSG-501-1181R05 | 3 | 4 | 8 | 58 | 6 | 0.5 | £38.91 | In Stock | ||
| OSG-501-1575R03 | 4 | 4 | 11 | 58 | 6 | 0.3 | £38.91 | In Stock | ||
| OSG-501-1575R05 | 4 | 4 | 11 | 58 | 6 | 0.5 | £38.91 | In Stock | ||
| OSG-501-1968R03 | 5 | 4 | 13 | 58 | 6 | 0.3 | £38.91 | In Stock | ||
| OSG-501-1968R05 | 5 | 4 | 13 | 58 | 6 | 0.5 | £38.91 | In Stock | ||
| OSG-501-2362R03 | 6 | 4 | 15 | 58 | 6 | 20 | 5.8 | £42.15 | In Stock | |
| OSG-501-2362R05 | 6 | 4 | 15 | 58 | 6 | 20 | 5.8 | £42.15 | In Stock | |
| OSG-501-2362R10 | 6 | 4 | 15 | 58 | 6 | 20 | 5.8 | £42.15 | In Stock | |
| OSG-501-2362R15 | 6 | 4 | 15 | 58 | 6 | 20 | 5.8 | £42.15 | In Stock | |
| OSG-501-2362R20 | 6 | 4 | 15 | 58 | 6 | 20 | 5.8 | £42.15 | In Stock | |
| OSG-501-3150R03 | 8 | 4 | 20 | 64 | 8 | 25 | 7.8 | £50.26 | In Stock | |
| OSG-501-3150R05 | 8 | 4 | 20 | 64 | 8 | 25 | 7.8 | £50.26 | In Stock | |
| OSG-501-3150R10 | 8 | 4 | 20 | 64 | 8 | 25 | 7.8 | £50.26 | In Stock | |
| OSG-501-3150R15 | 8 | 4 | 20 | 64 | 8 | 25 | 7.8 | £50.26 | In Stock | |
| OSG-501-3150R20 Viewing | 8 | 4 | 20 | 64 | 8 | 25 | 9.8 | £50.26 | In Stock | |
| OSG-501-3937R03 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-3937R05 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-3937R10 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-3937R15 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-3937R20 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-3937R30 | 10 | 4 | 25 | 73 | 10 | 30 | 9.8 | £71.35 | In Stock | |
| OSG-501-4724R03 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-4724R05 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-4724R10 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-4724R15 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-4724R20 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-4724R30 | 12 | 4 | 30 | 84 | 12 | 38 | 11.8 | £97.26 | In Stock | |
| OSG-501-6299R03 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R05 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R10 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R15 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R20 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R30 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-6299R40 | 16 | 4 | 40 | 93 | 16 | 45 | 15.8 | £173.70 | In Stock | |
| OSG-501-7874R03 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R05 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R10 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R15 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R20 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R30 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R40 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock | |
| OSG-501-7874R50 | 20 | 4 | 50 | 105 | 20 | 60 | 19.8 | £256.71 | In Stock |
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