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OSG Carbide 4 Flute End Mill Square Edge Diamond Coated - Regular Length For Plastic & Graphite - 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 with a square-edge design and Diamond Coating is a precision cutting tool engineered for reliable performance in plastic and graphite. With a regular-length shank and four cutting edges, it delivers efficient material removal while maintaining tight tolerances and consistent finishes.
Designed to withstand demanding plastic and graphite applications, this end mill blends durability with predictable results. It’s a dependable choice for professionals and hobbyists alike, helping you achieve repeatable quality across projects without frequent tool changes.
- Diamond-coated carbide for extended tool life: The diamond coating significantly boosts wear resistance, reducing edge dulling and downtime in plastic and graphite work.
- Four-flute design for fast, stable cutting: Four flutes maximize material removal while maintaining rigidity, minimizing chatter and delivering smoother surfaces.
- Square-edge geometry with regular-length shank: Provides precise starts and clean corners with broad compatibility across standard setups and machines.
Using this end mill helps streamline workflows, reduce cycle times, and deliver consistent, high-quality results. Its combination of durability, precision, and versatility makes it a reliable tool for everyday plastics and graphite machining tasks, from prototyping to production runs.
Part Numbers
- Protool Part Number
- OSG-404-3150DIA
- 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 Edge Diamond Coated - Regular Length For Plastic & Graphite
View full collection →You are viewing OSG-404-3150DIA. 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-404-0394DIA | 1 | 4 | 3 | 39 | 3 | £35.00 | In Stock | |
| OSG-404-0787DIA | 2 | 4 | 7 | 39 | 3 | £50.01 | In Stock | |
| OSG-404-1181DIA | 3 | 4 | 10 | 39 | 3 | £48.61 | In Stock | |
| OSG-404-1378DIA | 3.5 | 4 | 12 | 51 | 4 | £77.50 | 1-2 days | |
| OSG-404-1575DIA | 4 | 4 | 14 | 51 | 4 | £78.32 | In Stock | |
| OSG-404-1968DIA | 5 | 4 | 16 | 51 | 5 | £94.36 | In Stock | |
| OSG-404-2362DIA | 6 | 4 | 19 | 64 | 6 | £107.15 | In Stock | |
| OSG-404-3150DIA Viewing | 8 | 4 | 21 | 64 | 8 | £150.96 | In Stock | |
| OSG-404-3937DIA | 10 | 4 | 25 | 70 | 10 | £179.88 | In Stock | |
| OSG-404-4724DIA | 12 | 4 | 25 | 76 | 12 | £225.69 | In Stock | |
| OSG-404-6299DIA | 16 | 4 | 32 | 89 | 16 | £368.09 | In Stock | |
| OSG-404-7874DIA | 20 | 4 | 38 | 102 | 20 | £487.45 | In Stock |
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