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OSG Carbide 4 Flute End Mill Square Edge Diamond Coated - Regular Length For Plastic & Graphite - 3mm
| Cutter Diameter | 3 |
| Number of Flutes | 4 |
| Flute Length | 10 |
| Overall Length | 39 |
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Description
OSG Carbide 4-Flute End Mill with a square-edge and diamond coating is designed for precision machining in plastics and graphite. This 3 mm diameter, regular-length tool features four flutes for efficient material removal, delivering stable, accurate cuts suitable for both professional shops and hobbyist work.
- Diamond-coated durability: The diamond coating provides exceptional wear resistance and extended tool life, helping maintain sharp edges and consistent performance through demanding plastic and graphite milling.
- Four-flute efficiency: Four flutes enable faster material removal while preserving chip evacuation and cutting stability for smoother finishes in plastic and graphite work.
- Square-edge precision: The square-edge geometry delivers clean, accurate corners and tight tolerances, reducing finishing passes and improving edge quality.
By pairing diamond-coated durability with a stable four-flute design and a precise square edge, this end mill boosts workflow efficiency, delivers reliable, repeatable results, and minimizes downtime from tool changes. It’s a dependable choice for engineers, machinists, and hobbyists seeking consistent performance in plastic and graphite milling.
Part Numbers
- Protool Part Number
- OSG-404-1181DIA
- 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-404-1181DIA. 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 | £39.38 | In Stock | |
| OSG-404-0787DIA | 2 | 4 | 7 | 39 | 3 | £56.26 | In Stock | |
| OSG-404-1181DIA Viewing | 3 | 4 | 10 | 39 | 3 | £54.70 | In Stock | |
| OSG-404-1378DIA | 3.5 | 4 | 12 | 51 | 4 | £87.19 | 1-2 days | |
| OSG-404-1575DIA | 4 | 4 | 14 | 51 | 4 | £88.11 | In Stock | |
| OSG-404-1968DIA | 5 | 4 | 16 | 51 | 5 | £106.16 | In Stock | |
| OSG-404-2362DIA | 6 | 4 | 19 | 64 | 6 | £120.54 | In Stock | |
| OSG-404-3150DIA | 8 | 4 | 21 | 64 | 8 | £169.83 | In Stock | |
| OSG-404-3937DIA | 10 | 4 | 25 | 70 | 10 | £202.37 | In Stock | |
| OSG-404-4724DIA | 12 | 4 | 25 | 76 | 12 | £253.91 | In Stock | |
| OSG-404-6299DIA | 16 | 4 | 32 | 89 | 16 | £441.70 | In Stock | |
| OSG-404-7874DIA | 20 | 4 | 38 | 102 | 20 | £584.94 | In Stock |
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