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OSG Carbide 4 Flute End Mill Ball Nose TiAlN Coated - Regular Length Centre Cutting For General Applications - 3.5mm
| Cutter Diameter | 3.5 |
| Number of Flutes | 4 |
| Flute Length | 12 |
| Overall Length | 51 |
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Description
OSG Carbide 4 Flute End Mill with Ball Nose is a versatile cutting tool designed for contouring, profiling, and 3D machining across a range of materials. With a 3.5 mm diameter, four flutes, regular-length body, and a TiAlN coating, it delivers precise, smooth finishes and improved wear resistance in general machining. Its center-cutting design enables plunging, while the ball nose creates smooth, accurate curves on complex surfaces.
- Ball Nose for Smooth 3D Contouring: Enables precise curved surface finishing and accurate 3D profiles, delivering smooth transitions on complex geometries.
- TiAlN Coating for Extended Tool Life: The advanced coating increases wear resistance, reducing tool wear and enabling longer runs in demanding materials.
- Center-Cutting, Regular-Length Body with Four Flutes: Provides efficient material removal, stable cutting, and reliable plunging performance for general purpose machining.
This combination of geometry, coating, and construction helps you complete projects faster with consistent accuracy. The 3.5 mm diameter is well-suited for fine features and precise radii, while the TiAlN coating minimizes heat-related wear for longer life between changes. Use it across contouring, profiling, and 3D work to achieve repeatable finishes and dependable results in everyday manufacturing, prototyping, or repair tasks.
Part Numbers
- Protool Part Number
- OSG-404-1378-BN11
- 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 TiAlN Coated - Regular Length Centre Cutting For General Applications
View full collection →You are viewing OSG-404-1378-BN11. 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-BN11 | 1 | 4 | 3 | 39 | 3 | £37.23 | In Stock | |
| OSG-404-0591-BN11 | 1.5 | 4 | 5 | 39 | 3 | £29.39 | In Stock | |
| OSG-404-0787-BN11 | 2 | 4 | 7 | 39 | 3 | £30.79 | In Stock | |
| OSG-404-0984-BN11 | 2.5 | 4 | 8 | 39 | 3 | £29.39 | In Stock | |
| OSG-404-1181-BN11 | 3 | 4 | 10 | 39 | 3 | £29.39 | In Stock | |
| OSG-404-1378-BN11 Viewing | 3.5 | 4 | 12 | 51 | 4 | £34.80 | In Stock | |
| OSG-404-1575-BN11 | 4 | 4 | 14 | 51 | 4 | £31.82 | In Stock | |
| OSG-404-1772-BN11 | 4.5 | 4 | 14 | 51 | 5 | £36.85 | In Stock | |
| OSG-404-1968-BN11 | 5 | 4 | 16 | 51 | 5 | £36.85 | In Stock | |
| OSG-404-2362-BN11 | 6 | 4 | 19 | 64 | 6 | £41.11 | In Stock | |
| OSG-404-2756-BN11 | 7 | 4 | 19 | 64 | 8 | £49.32 | In Stock | |
| OSG-404-3150-BN11 | 8 | 4 | 21 | 64 | 8 | £48.56 | In Stock | |
| OSG-404-3543-BN11 | 9 | 4 | 22 | 70 | 10 | £53.03 | In Stock | |
| OSG-404-3937-BN11 | 10 | 4 | 25 | 70 | 10 | £58.99 | In Stock | |
| OSG-404-4724-BN11 | 12 | 4 | 25 | 76 | 12 | £88.63 | In Stock | |
| OSG-404-5512-BN11 | 14 | 4 | 30 | 89 | 14 | £115.69 | In Stock | |
| OSG-404-6299-BN11 | 16 | 4 | 32 | 89 | 16 | £175.69 | In Stock | |
| OSG-404-7087-BN11 | 18 | 4 | 35 | 102 | 18 | £215.61 | In Stock | |
| OSG-404-7874-BN11 | 20 | 4 | 38 | 102 | 20 | £252.30 | In Stock | |
| OSG-404-8661-BN11 | 22 | 4 | 38 | 102 | 22 | £406.56 | In Stock | |
| OSG-404-9843-BN11 | 25 | 4 | 38 | 102 | 25 | £436.26 | In Stock |
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