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OSG Carbide 4 Flute End Mill Corner Radius TiSlN Coated - For Exotic Materials - 20mm x R2
| Cutter Diameter | 20 |
| Number of Flutes | 4 |
| Flute Length | 50 |
| Overall Length | 105 |
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Description
The OSG Carbide 4 Flute End Mill with a corner radius and TiSlN coating is a precision cutting tool designed to tackle exotic materials. With a 20 mm diameter and a 2 mm corner radius, it delivers stable, accurate material removal and strong edge support for demanding applications. This end mill is ideal for machinists, engineers, and hobbyists who need reliable performance in challenging materials.
Featuring a TiSlN coating, this end mill delivers enhanced wear resistance and better heat tolerance, helping the tool stay sharper longer in tough cutting conditions. The four-flute geometry provides efficient chip evacuation and steady cutting, enabling higher productivity without sacrificing finish quality.
- TiSlN Coating for Extended Tool Life: Increased hardness and wear resistance reduce wear and heat buildup, allowing longer tool life and fewer interruptions in demanding exotic-material operations.
- Four-Flute Design for Efficient Material Removal: More flutes mean faster material removal, smoother cutting, and improved rigidity for steady performance even at higher feed rates.
- Corner Radius for Strength and Finishing Quality: The 2 mm corner radius enhances edge durability and helps produce consistent, accurate radii and smoother corners in tough materials.
Designed for dependable, repeatable results, this carbide end mill supports faster workflows, fewer tool changes, and higher-quality finishes across exotic materials. The combination of rigid carbide, durable TiSlN coating, and thoughtful geometry helps you complete precision cuts with confidence, delivering reliable performance from setup to finish.
Part Numbers
- Protool Part Number
- OSG-501-7874R20
- 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-501-7874R20. 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 | 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 Viewing | 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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