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OSG Carbide 4 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 25mm
| Cutter Diameter | 25 |
| Number of Flutes | 4 |
| Flute Length | 38 |
| Overall Length | 102 |
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Description
The OSG Carbide 4 Flute End Mill with Ball Nose is a 25 mm diameter, regular-length carbide tool built for general machining tasks. With center-cutting capability, it’s ideal for contouring, profiling, and 3D shaping across a variety of materials, making it a dependable choice for engineers, machinists, and hobbyists alike.
Featuring a ball nose geometry, it produces smooth transitions on curved surfaces and rounded edges, delivering precise finishes on complex shapes without sacrificing edge quality. The regular-length design offers versatile deployment across common setups, providing reliable performance in everyday milling work.
- Ball Nose geometry for smooth 3D contours: Creates gentle, accurate radii on curved surfaces for high‑quality finishes during contouring and 3D machining.
- Center-cutting design for plunging and pocketing: Enables reliable plunging and versatile pocketing in a single tool, reducing setup steps and improving workflow.
- Four-flute carbide construction for efficient material removal: Balances aggressive removal with good surface finish and durability for consistent results across general applications.
This end mill helps you complete complex shapes more efficiently, with predictable finishes and reduced downtime. Its carbide composition provides wear resistance for longer tool life, while the regular length and center-cutting design offer flexibility across a wide range of machines and tasks—from aerospace and automotive work to everyday manufacturing projects.
Part Numbers
- Protool Part Number
- OSG-404-9843-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-404-9843-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 | £22.04 | In Stock | |
| OSG-404-0591-BN | 1.5 | 4 | 5 | 39 | 3 | £14.23 | In Stock | |
| OSG-404-0787-BN | 2 | 4 | 7 | 39 | 3 | £15.63 | In Stock | |
| OSG-404-0984-BN | 2.5 | 4 | 8 | 39 | 3 | £14.23 | In Stock | |
| OSG-404-1181-BN | 3 | 4 | 10 | 39 | 3 | £14.24 | In Stock | |
| OSG-404-1378-BN | 3.5 | 4 | 12 | 51 | 4 | £19.58 | In Stock | |
| OSG-404-1575-BN | 4 | 4 | 14 | 51 | 4 | £20.48 | In Stock | |
| OSG-404-1772-BN | 4.5 | 4 | 14 | 51 | 5 | £21.64 | In Stock | |
| OSG-404-1968-BN | 5 | 4 | 16 | 51 | 5 | £21.64 | In Stock | |
| OSG-404-2362-BN | 6 | 4 | 19 | 64 | 6 | £25.90 | In Stock | |
| OSG-404-2756-BN | 7 | 4 | 19 | 64 | 8 | £30.87 | In Stock | |
| OSG-404-3150-BN | 8 | 4 | 21 | 64 | 8 | £30.15 | In Stock | |
| OSG-404-3543-BN | 9 | 4 | 22 | 70 | 10 | £34.56 | In Stock | |
| OSG-404-3937-BN | 10 | 4 | 25 | 70 | 10 | £40.53 | In Stock | |
| OSG-404-4331-BN | 11 | 4 | 25 | 70 | 11 | £55.57 | In Stock | |
| OSG-404-4724-BN | 12 | 4 | 25 | 76 | 12 | £66.80 | In Stock | |
| OSG-404-5512-BN | 14 | 4 | 30 | 89 | 14 | £93.72 | In Stock | |
| OSG-404-6299-BN | 16 | 4 | 32 | 89 | 16 | £136.82 | In Stock | |
| OSG-404-7087-BN | 18 | 4 | 35 | 102 | 18 | £176.66 | In Stock | |
| OSG-404-7874-BN | 20 | 4 | 38 | 102 | 20 | £200.78 | In Stock | |
| OSG-404-8661-BN | 22 | 4 | 38 | 102 | 22 | £342.17 | 1-2 days | |
| OSG-404-9843-BN Viewing | 25 | 4 | 38 | 102 | 25 | £371.28 | In Stock |
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