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OSG Carbide 4 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 10mm
| Cutter Diameter | 10 |
| Number of Flutes | 4 |
| Flute Length | 25 |
| Overall Length | 70 |
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Description
The OSG Carbide 4 Flute End Mill Ball Nose is a 10 mm diameter, regular-length cutting tool designed for general machining tasks. With center-cutting capability, it’s ideal foring plunge cuts and starting profiles, while the ball nose geometry delivers smooth 3D surfaces and precise contouring. This end mill is built for engineers, machinists, and hobbyists who need reliable performance across a wide range of materials and applications.
Featuring four flutes and a carbide body, it delivers efficient material removal and long tool life, making it well-suited for contouring, profiling, and 3D machining in common manufacturing workflows. The regular-length design provides stable engagement and versatility across different setups, from benchtop machines to CNC centers.
- Ball Nose Geometry for Smooth 3D Contouring: Delivers gentle, accurate radii on complex surfaces, producing high-quality finishes on molds, housings, and carved features.
- Four-Flute Carbide Construction for Efficient Material Removal: Provides rigid cutting action and extended tool life with better chip evacuation for cleaner cuts across metals and plastics.
- Center-Cutting with Regular Length: Enables reliable plunge cuts in pockets and slots, while the standard length offers versatile reach and stable performance on a wide range of machines.
This end mill helps you achieve consistent, precise results in everyday production and prototyping—from aerospace components to automotive fixtures and general manufacturing tasks. Its durable carbide composition and proven geometry reduce downtime, improve surface finish, and give you confidence to tackle varied machining jobs with one dependable tool.
Part Numbers
- Protool Part Number
- OSG-404-3937-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-404-3937-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 | 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 Viewing | 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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