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

OSG Carbide 4 Flute End Mill Square - Regular Length Centre Cutting For General Applications - 2.5mm
| Cutter Diameter | 2.5 |
| Number of Flutes | 4 |
| Flute Length | 8 |
| Overall Length | 39 |
Learn more about Klarna
Description
The OSG Carbide 4 Flute End Mill Square, Regular Length Centre Cutting, 2.5mm diameter, is a versatile cutting tool designed for everyday general machining tasks. With a square end and four cutting edges, it delivers precise pockets, slots, and profiles with clean edges and efficient material removal. It's a reliable choice for engineers, machinists, hobbyists, and maintenance teams needing consistent results across a wide range of projects.
Crafted from solid carbide for wear resistance and long tool life, this end mill maintains sharpness through challenging jobs and provides stable performance on standard milling machines. Its geometry supports dependable plunging and corner-cutting while delivering repeatable results you can trust from job to job.
- Four-Flute Construction for Efficient Material Removal: Higher chip capacity and a stiff cutting edge allow smoother cuts and faster material removal, improving throughput without sacrificing edge quality.
- Square End with Centre-Cutting Design for Versatility: Delivers precise 90-degree corners, clean profiling, and true plunging capability for slots, pockets, and contouring across a range of materials.
- Regular-Length Body for General-Purpose Reliability: Balances rigidity and reach for general machining on common machines, delivering consistent performance across jobs and reducing setup adjustments.
This end mill helps you streamline work-in-progress by delivering repeatable, accurate cuts with minimal tool chatter and long-lasting cutting edges. The 2.5mm diameter is ideal for tight tolerances and fine features, while the carbide construction provides wear resistance for extended tool life and fewer replacements. Whether prototyping or producing, it supports reliable results, smoother finishes, and faster cycle times on a broad range of everyday milling tasks.
Part Numbers
- Protool Part Number
- OSG-404-0984
- 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 Square - Regular Length Centre Cutting For General Applications
View full collection →You are viewing OSG-404-0984. 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 | 1 | 4 | 3 | 39 | 3 | £19.15 | In Stock | |
| OSG-404-0591 | 1.5 | 4 | 5 | 39 | 3 | £12.35 | In Stock | |
| OSG-404-0787 | 2 | 4 | 7 | 39 | 3 | £13.60 | In Stock | |
| OSG-404-0984 Viewing | 2.5 | 4 | 8 | 39 | 3 | £12.35 | In Stock | |
| OSG-404-1181 | 3 | 4 | 10 | 39 | 3 | £12.37 | In Stock | |
| OSG-404-1378 | 3.5 | 4 | 12 | 51 | 4 | £17.03 | In Stock | |
| OSG-404-1575 | 4 | 4 | 14 | 51 | 4 | £17.79 | In Stock | |
| OSG-404-1772 | 4.5 | 4 | 14 | 51 | 5 | £18.86 | In Stock | |
| OSG-404-1968 | 5 | 4 | 16 | 51 | 5 | £18.88 | In Stock | |
| OSG-404-2362 | 6 | 4 | 19 | 64 | 6 | £22.55 | In Stock | |
| OSG-404-2756 | 7 | 4 | 19 | 64 | 8 | £26.88 | In Stock | |
| OSG-404-3150 | 8 | 4 | 21 | 64 | 8 | £26.18 | In Stock | |
| OSG-404-3543 | 9 | 4 | 22 | 70 | 10 | £30.09 | In Stock | |
| OSG-404-3937 | 10 | 4 | 25 | 70 | 10 | £35.29 | In Stock | |
| OSG-404-4331 | 11 | 4 | 25 | 70 | 11 | £48.41 | In Stock | |
| OSG-404-4724 | 12 | 4 | 25 | 76 | 12 | £58.08 | In Stock | |
| OSG-404-5512 | 14 | 4 | 30 | 89 | 14 | £81.58 | In Stock | |
| OSG-404-6299 | 16 | 4 | 32 | 89 | 16 | £119.17 | In Stock | |
| OSG-404-7087 | 18 | 4 | 35 | 102 | 18 | £153.60 | In Stock | |
| OSG-404-7874 | 20 | 4 | 38 | 102 | 20 | £174.61 | In Stock | |
| OSG-404-8661 | 22 | 4 | 38 | 102 | 22 | £297.05 | In Stock | |
| OSG-404-9843 | 25 | 4 | 38 | 102 | 25 | £323.34 | In Stock |
No products match your filters.


