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OSG Carbide 4 Flute End Mill Square Edge Diamond Coated - Regular Length For Plastic & Graphite - 1mm
| Cutter Diameter | 1 |
| Number of Flutes | 4 |
| Flute Length | 3 |
| Overall Length | 39 |
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Description
The OSG Carbide 4 Flute End Mill is a precision cutting tool designed for plastic and graphite applications. Its square-edge geometry paired with a Diamond Coating helps maintain sharpness and deliver reliable performance even on demanding materials. With a 1 mm diameter and a regular length, this end mill fits standard tooling setups while delivering consistent, high-quality results.
- Diamond-coated durability: Extended edge life and wear resistance mean fewer tool changes and more dependable performance when machining abrasive plastics and graphite.
- Four-flute efficiency: Efficient material removal with stable cuts and smoother finishes, thanks to the 4-flute design that helps keep feeds steady and predictable.
- Square-edge precision: Clean starts and accurate profiles in plastic and graphite, delivering consistent hole sizes and feature definitions for reliable results.
Designed to integrate smoothly into existing workflows, this end mill supports precise feature work at a small diameter. The combination of carbide rigidity, diamond coating, and thoughtful geometry helps you achieve repeatable results, reduce downtime, and complete projects with confidence across a range of plastic and graphite tasks.
Part Numbers
- Protool Part Number
- OSG-404-0394DIA
- 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-404-0394DIA. 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 Viewing | 1 | 4 | 3 | 39 | 3 | £39.38 | In Stock | |
| OSG-404-0787DIA | 2 | 4 | 7 | 39 | 3 | £56.26 | In Stock | |
| OSG-404-1181DIA | 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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