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OSG Carbide 4 Flute End Mill Ball Nose - Regular Length Centre Cutting For General Applications - 2.5mm

SKU:OSG-404-0984-BN

The OSG Carbide 4 Flute End Mill with Ball Nose is a regular-length, center-cutting tool designed for general machining tasks. With a 2.5 mm diameter and ball nose geometry, it excels at contourin... Read more ↓
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Cutter Diameter2.5
Number of Flutes4
Flute Length8
Overall Length39
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£12.65
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Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The OSG Carbide 4 Flute End Mill with Ball Nose is a regular-length, center-cutting tool designed for general machining tasks. With a 2.5 mm diameter and ball nose geometry, it excels at contouring, profiling, and 3D shaping, delivering precise radii and smooth transitions across small features. Constructed from solid carbide and featuring four flutes, this end mill provides durable performance and efficient material removal, making it a dependable choice for engineers, machinists, and hobbyists across aerospace, automotive, and general manufacturing applications.

  • Ball nose geometry for smooth 3D contours: Creates gentle radii and high-quality surface finishes on complex profiles, enabling precise 3D machining.
  • Center-cutting for easy plunging and pocketing: Lets you start cuts from the top surface without pilot holes, speeding setup and workflow.
  • Four-flute carbide design for efficient material removal: More cutting edges and solid carbide construction provide stable cuts, better chip evacuation, and reliable performance across everyday machining tasks.

Designed for reliability across a range of tasks, this end mill helps you achieve consistent tolerances and smooth radii on complex profiles. The 2.5 mm diameter and regular-length body keep setups straightforward and compatible with common machines and holders, reducing changeovers and downtime. With carbide hardness and four cutting edges, you get steady material removal and durable performance for everyday production and shop-floor work.

Part Numbers

Protool Part Number
OSG-404-0984-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.

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 - Regular Length Centre Cutting For General Applications

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You are viewing OSG-404-0984-BN. Click any other SKU to view its full details.

Product SKUCutter DiameterNumber of FlutesFlute LengthOverall LengthShank DiameterPriceStock Order
OSG-404-0394-BN 143393£19.59 In Stock
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OSG-404-1575-BN 4414514£18.21 In Stock
OSG-404-1772-BN 4.5414515£19.24 In Stock
OSG-404-1968-BN 5416515£19.24 In Stock
OSG-404-2362-BN 6419646£23.02 In Stock
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OSG-404-7874-BN 2043810220£167.32 In Stock
OSG-404-8661-BN 2243810222£285.14 1-2 days
OSG-404-9843-BN 2543810225£309.40 In Stock

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