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OSG Carbide 2 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 3.5mm
| Cutter Diameter | 3.5 |
| Number of Flutes | 2 |
| Flute Length | 12 |
| Overall Length | 51 |
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Description
The OSG Carbide 2 Flute End Mill with Ball Nose is a general‑purpose cutting tool designed for precise contouring, profiling, and 3D machining. With a 3.5 mm diameter, regular‑length body, two flutes, and center‑cutting capability, it delivers reliable performance across a wide range of materials and applications.
Ideal for engineers, machinists, hobbyists, and production shops seeking consistent results, this end mill blends smooth radii, sturdy carbide construction, and predictable wear resistance to keep workflows moving smoothly.
- Ball Nose geometry for smooth 3D contours: Delivers clean radii and gentle transitions on curved surfaces, reducing post‑processing and improving true 3D shape accuracy.
- 2‑flute carbide design for efficient material removal: Provides a balance of rigidity and chip clearance for fast, steady cutting across a range of common materials, with reliable finishes.
- Regular‑length, center‑cutting versatility: Enables plunge cutting, pocketing, and contouring in a single tool, reducing setup time and the need for multiple tools.
By choosing this end mill, you gain a dependable workhorse for general machining tasks. The carbide construction offers durable wear resistance and long tool life, helping you maintain tight tolerances and consistent finishes project after project. With its ball nose geometry, you can achieve smooth surfaces in 3D forms, while the 2‑flute design supports faster feeds and efficient chip evacuation. The regular‑length, center‑cutting design makes it versatile for a range of operations—from plunging to profiling—so you can complete more work with fewer tool changes and less downtime.
Part Numbers
- Protool Part Number
- OSG-402-1378-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 2 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications
View full collection →You are viewing OSG-402-1378-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-402-0394-BN | 1 | 2 | 3 | 39 | 3 | £22.04 | In Stock | |
| OSG-402-0591-BN | 1.5 | 2 | 5 | 39 | 3 | £14.23 | In Stock | |
| OSG-402-0787-BN | 2 | 2 | 7 | 39 | 3 | £15.63 | In Stock | |
| OSG-402-0984-BN | 2.5 | 2 | 8 | 39 | 3 | £14.23 | In Stock | |
| OSG-402-1181-BN | 3 | 2 | 10 | 39 | 3 | £14.23 | In Stock | |
| OSG-402-1378-BN Viewing | 3.5 | 2 | 12 | 51 | 4 | £19.58 | In Stock | |
| OSG-402-1575-BN | 4 | 2 | 14 | 51 | 4 | £20.43 | In Stock | |
| OSG-402-1772-BN | 4.5 | 2 | 14 | 51 | 5 | £21.64 | In Stock | |
| OSG-402-1968-BN | 5 | 2 | 16 | 51 | 5 | £21.64 | In Stock | |
| OSG-402-2362-BN | 6 | 2 | 19 | 64 | 6 | £25.87 | In Stock | |
| OSG-402-2756-BN | 7 | 2 | 19 | 64 | 8 | £30.87 | In Stock | |
| OSG-402-3150-BN | 8 | 2 | 21 | 64 | 8 | £30.15 | In Stock | |
| OSG-402-3543-BN | 9 | 2 | 22 | 70 | 10 | £34.56 | In Stock | |
| OSG-402-3937-BN | 10 | 2 | 25 | 70 | 10 | £40.53 | In Stock | |
| OSG-402-4331-BN | 11 | 2 | 25 | 70 | 11 | £55.57 | In Stock | |
| OSG-402-4724-BN | 12 | 2 | 25 | 76 | 12 | £66.68 | In Stock | |
| OSG-402-5512-BN | 14 | 2 | 30 | 89 | 14 | £93.86 | In Stock | |
| OSG-402-6299-BN | 16 | 2 | 32 | 89 | 16 | £137.04 | In Stock | |
| OSG-402-7087-BN | 18 | 2 | 35 | 102 | 18 | £176.66 | In Stock | |
| OSG-402-7874-BN | 20 | 2 | 38 | 102 | 20 | £200.45 | In Stock | |
| OSG-402-8661-BN | 22 | 2 | 38 | 102 | 22 | £341.64 | In Stock | |
| OSG-402-9843-BN | 25 | 2 | 38 | 102 | 22 | £371.28 | In Stock |
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