Please log in here to access all benefits, including promotional discounts and faster checkouts.

OSG Carbide 4 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 3mm
| Cutter Diameter | 3 |
| Number of Flutes | 4 |
| Flute Length | 10 |
| Overall Length | 39 |
Learn more about Klarna
Description
The OSG Carbide 4 Flute End Mill Ball Nose is a regular-length, center-cutting carbide tool designed for general machining tasks. With a 3 mm diameter and four flutes, it handles contouring, profiling, and 3D machining with precision and efficiency. The ball nose creates smooth transitions on complex surfaces, making it ideal for detailed work across a wide range of materials and applications.
Built for professionals and hobbyists alike, this end mill offers reliable performance in aerospace, automotive, and general manufacturing environments. The regular-length body provides versatile reach and stiffness, helping you maintain accurate cuts whether you’re working in tight pockets or across larger profiles.
- Ball Nose Geometry for Smooth 3D Contouring: Delivers precise radii and clean surface finishes on complex shapes, reducing finishing passes and improving part quality.
- Center-Cutting Four-Flute Design: Enables plunging and pocketing with stable, efficient material removal for consistent depths and reliable results.
- Regular-Length, 3 mm Diameter for Flexible Reach: The compact size and length offer access to tight pockets and varied contours while maintaining rigidity and compatibility with standard toolholders.
This end mill helps you finish detailed work faster and more consistently. The ball nose provides smooth transitions on curved surfaces, while the four-flute carbide geometry removes material efficiently to reduce cycle times. The center-cutting capability adds versatile machining options, so you can plunge, pocket, and contour with a single tool. With a 3 mm diameter and regular-length body, you gain precise control in tight spaces and across a range of setups, delivering dependable, repeatable results project after project.
Part Numbers
- Protool Part Number
- OSG-404-1181-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-404-1181-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 Viewing | 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 | 25 | 4 | 38 | 102 | 25 | £371.28 | In Stock |
No products match your filters.


