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OSG Carbide 4 Flute End Mill Square - Regular Length Centre Cutting For General Applications - 8mm
| Cutter Diameter | 8 |
| Number of Flutes | 4 |
| Flute Length | 21 |
| Overall Length | 64 |
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Description
The OSG Carbide 4 Flute End Mill Square is a regular-length, centre-cutting milling tool designed for general machining tasks. With an 8 mm diameter and a square end, it delivers clean slots, precise profiles, and reliable milling across a range of materials. The four-flute geometry provides efficient material removal while maintaining a good surface finish.
This end mill is built for steady, dependable performance in everyday shop work. Its carbide construction offers improved wear resistance and durability, helping you achieve consistent results over many cycles and reducing tool changes in busy environments. Whether you're prototyping, fabricating parts, or refining a finish, it's a versatile choice for general applications.
- Four-flute geometry for efficient material removal: Four flutes provide a balanced combination of rigidity and chip clearance, enabling faster cutting and smoother finishes on a variety of materials.
- Centre-cutting square profile for plunge cuts and versatile contouring: The square end and centre-cutting action allow plunging into workpieces and precise milling, slotting, and profiling in a single setup.
- Regular-length carbide design for reliability and long tool life: The regular length offers balanced rigidity for controlled cuts, while carbide provides enhanced hardness and wear resistance for durable performance across many jobs.
In everyday workflows, this end mill helps you move from rough milling to finished parts faster, keeps tolerances tight, and reduces downtime from tool changes. By pairing strong rigidity with efficient material removal, it delivers repeatable finishes on profiles, slots, and pockets, making it a dependable workhorse for general machining tasks.
Part Numbers
- Protool Part Number
- OSG-404-3150
- 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-404-3150. 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 | £17.02 | In Stock | |
| OSG-404-0591 | 1.5 | 4 | 5 | 39 | 3 | £10.98 | In Stock | |
| OSG-404-0787 | 2 | 4 | 7 | 39 | 3 | £12.08 | In Stock | |
| OSG-404-0984 | 2.5 | 4 | 8 | 39 | 3 | £10.98 | In Stock | |
| OSG-404-1181 | 3 | 4 | 10 | 39 | 3 | £11.00 | In Stock | |
| OSG-404-1378 | 3.5 | 4 | 12 | 51 | 4 | £15.13 | In Stock | |
| OSG-404-1575 | 4 | 4 | 14 | 51 | 4 | £15.82 | In Stock | |
| OSG-404-1772 | 4.5 | 4 | 14 | 51 | 5 | £16.77 | In Stock | |
| OSG-404-1968 | 5 | 4 | 16 | 51 | 5 | £16.79 | In Stock | |
| OSG-404-2362 | 6 | 4 | 19 | 64 | 6 | £20.04 | In Stock | |
| OSG-404-2756 | 7 | 4 | 19 | 64 | 8 | £23.89 | In Stock | |
| OSG-404-3150 Viewing | 8 | 4 | 21 | 64 | 8 | £23.27 | In Stock | |
| OSG-404-3543 | 9 | 4 | 22 | 70 | 10 | £26.75 | In Stock | |
| OSG-404-3937 | 10 | 4 | 25 | 70 | 10 | £31.36 | In Stock | |
| OSG-404-4331 | 11 | 4 | 25 | 70 | 11 | £43.03 | In Stock | |
| OSG-404-4724 | 12 | 4 | 25 | 76 | 12 | £51.63 | In Stock | |
| OSG-404-5512 | 14 | 4 | 30 | 89 | 14 | £72.51 | In Stock | |
| OSG-404-6299 | 16 | 4 | 32 | 89 | 16 | £99.31 | In Stock | |
| OSG-404-7087 | 18 | 4 | 35 | 102 | 18 | £128.00 | In Stock | |
| OSG-404-7874 | 20 | 4 | 38 | 102 | 20 | £145.51 | In Stock | |
| OSG-404-8661 | 22 | 4 | 38 | 102 | 22 | £247.54 | In Stock | |
| OSG-404-9843 | 25 | 4 | 38 | 102 | 25 | £269.46 | In Stock |
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