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OSG Carbide 4 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 1.5mm
| Cutter Diameter | 1.5 |
| Number of Flutes | 4 |
| Flute Length | 5 |
| Overall Length | 39 |
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Description
The OSG Carbide 4 Flute End Mill with Ball Nose is a precise 1.5mm diameter cutting tool designed for general machining tasks, delivering smooth, accurate contouring and efficient material removal on small features and complex profiles. With a ball-nose tip, four-flute geometry, and regular-length body, it’s ideal for engineers, machinists, hobbyists, and manufacturers seeking reliable performance in contouring, profiling, and 3D work across aerospace, automotive, and general manufacturing applications.
- Ball Nose, 4 Flutes: Delivers smooth, accurate 3D contours and efficient material removal on small features and complex profiles.
- Center-Cutting Design: Enables plunging and versatile milling across setups, reducing tool changes and boosting workflow.
- Regular-Length 1.5mm Diameter Carbide End Mill: Provides rigidity and precision for general-purpose machining, delivering consistent results on a range of materials.
By combining a durable carbide body with a precise ball-nose profile, this end mill delivers reliable tool life, smooth finishes on complex surfaces, and consistent results across a range of materials. It helps streamline workflows—from setup to final pass—reducing cycle times and minimizing rework in aerospace, automotive, and general manufacturing tasks. Trust in its proven geometry to deliver repeatable performance, so you can focus on accuracy and throughput.
Part Numbers
- Protool Part Number
- OSG-404-0591-BN
- 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 Ball Nose - Regular Length Centre Cutting For General Applications
View full collection →You are viewing OSG-404-0591-BN. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OSG-404-0394-BN | 1 | 4 | 3 | 39 | 3 | £19.59 | In Stock | |
| OSG-404-0591-BN Viewing | 1.5 | 4 | 5 | 39 | 3 | £12.65 | In Stock | |
| OSG-404-0787-BN | 2 | 4 | 7 | 39 | 3 | £13.89 | In Stock | |
| OSG-404-0984-BN | 2.5 | 4 | 8 | 39 | 3 | £12.65 | In Stock | |
| OSG-404-1181-BN | 3 | 4 | 10 | 39 | 3 | £12.66 | In Stock | |
| OSG-404-1378-BN | 3.5 | 4 | 12 | 51 | 4 | £17.41 | In Stock | |
| OSG-404-1575-BN | 4 | 4 | 14 | 51 | 4 | £18.21 | In Stock | |
| OSG-404-1772-BN | 4.5 | 4 | 14 | 51 | 5 | £19.24 | In Stock | |
| OSG-404-1968-BN | 5 | 4 | 16 | 51 | 5 | £19.24 | In Stock | |
| OSG-404-2362-BN | 6 | 4 | 19 | 64 | 6 | £23.02 | In Stock | |
| OSG-404-2756-BN | 7 | 4 | 19 | 64 | 8 | £27.44 | In Stock | |
| OSG-404-3150-BN | 8 | 4 | 21 | 64 | 8 | £26.80 | In Stock | |
| OSG-404-3543-BN | 9 | 4 | 22 | 70 | 10 | £30.71 | In Stock | |
| OSG-404-3937-BN | 10 | 4 | 25 | 70 | 10 | £36.03 | In Stock | |
| OSG-404-4331-BN | 11 | 4 | 25 | 70 | 11 | £49.39 | In Stock | |
| OSG-404-4724-BN | 12 | 4 | 25 | 76 | 12 | £59.38 | In Stock | |
| OSG-404-5512-BN | 14 | 4 | 30 | 89 | 14 | £83.30 | In Stock | |
| OSG-404-6299-BN | 16 | 4 | 32 | 89 | 16 | £114.02 | In Stock | |
| OSG-404-7087-BN | 18 | 4 | 35 | 102 | 18 | £147.22 | In Stock | |
| OSG-404-7874-BN | 20 | 4 | 38 | 102 | 20 | £167.32 | In Stock | |
| OSG-404-8661-BN | 22 | 4 | 38 | 102 | 22 | £285.14 | 1-2 days | |
| OSG-404-9843-BN | 25 | 4 | 38 | 102 | 25 | £309.40 | In Stock |
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