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

OSG Carbide 4 Flute End Mill Ball Nose TiAlN Coated - Regular Length Centre Cutting For General Applications - 3.5mm

SKU:OSG-404-1378-BN11

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, regu... Read more ↓
P
K
H
Cutter Diameter3.5
Number of Flutes4
Flute Length12
Overall Length51
View all specifications ↓
Download Cutting Data
£34.80
Prices shown ex. VAT
In Stock— only 1 left
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

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 SKUCutter DiameterNumber of FlutesFlute LengthOverall LengthShank DiameterPriceStock Order
OSG-404-0394-BN11 143393£37.23 In Stock
OSG-404-0591-BN11 1.545393£29.39 In Stock
OSG-404-0787-BN11 247393£30.79 In Stock
OSG-404-0984-BN11 2.548393£29.39 In Stock
OSG-404-1181-BN11 3410393£29.39 In Stock
OSG-404-1378-BN11 Viewing3.5412514£34.80 In Stock
OSG-404-1575-BN11 4414514£31.82 In Stock
OSG-404-1772-BN11 4.5414515£36.85 In Stock
OSG-404-1968-BN11 5416515£36.85 In Stock
OSG-404-2362-BN11 6419646£41.11 In Stock
OSG-404-2756-BN11 7419648£49.32 In Stock
OSG-404-3150-BN11 8421648£48.56 In Stock
OSG-404-3543-BN11 94227010£53.03 In Stock
OSG-404-3937-BN11 104257010£58.99 In Stock
OSG-404-4724-BN11 124257612£88.63 In Stock
OSG-404-5512-BN11 144308914£115.69 In Stock
OSG-404-6299-BN11 164328916£175.69 In Stock
OSG-404-7087-BN11 1843510218£215.61 In Stock
OSG-404-7874-BN11 2043810220£252.30 In Stock
OSG-404-8661-BN11 2243810222£406.56 In Stock
OSG-404-9843-BN11 2543810225£436.26 In Stock

Other sizes in this range

with tools we think you'll like
All 21 →