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Widin Carbide Corner Radius End Mill For Stainless & Exotics - 4 Flute VariableHelix - 4mm x R0.5
| Cutter Diameter | 4 |
| Number of Flutes | 4 |
| Flute Length | 10 |
| Overall Length | 55 |
Learn more about Klarna
Description
Introducing the Widin Carbide Corner Radius End Mill — a precision tool designed for stainless steel and other exotic alloys. It features a 4 mm cutting diameter, a 0.5 mm corner radius (R0.5), a 4-flute design, and a variable helix to promote clean cuts and efficient chip evacuation. This combination delivers stable cutting, precise contouring, and extended tool life in challenging materials.
- 4-Flute Design for Stability and Finish: Four cutting edges provide robust material removal with reduced vibration, helping you achieve consistent, high-quality surfaces even in tough metals.
- Variable Helix for Smooth Cutting and Chip Evacuation: The variable helix layout minimizes chatter and enhances chip flow, keeping feeds steady and your finishes cleaner and more uniform.
- Corner Radius Precision with Carbide Durability: The 0.5 mm corner radius enables precise contouring and gentle radii on edges, while carbide construction delivers long tool life and wear resistance in stainless and exotic alloys.
Designed to boost productivity, this end mill reduces rework and downtime by delivering repeatable results, dependable performance, and cleaner finishes in demanding milling tasks. It’s a reliable choice for engineers, fabricators, and hobbyists who need precise contours and durable cutting performance from a single, versatile tool.
Part Numbers
- Protool Part Number
- SR50404005
- Brand
- Widin
- 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: Widin Carbide Corner Radius End Mill For Stainless & Exotics - 4 Flute Variable Helix (SR504)
View full collection →You are viewing SR50404005. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Corner Radius | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| SR50401001 | 1 | 4 | 2.5 | 50 | 6 | 0.1 | £36.03 | 5 days | |
| SR50401002 | 1 | 4 | 2.5 | 50 | 6 | 0.2 | £36.03 | 5 days | |
| SR50401201 | 1.2 | 4 | 3 | 50 | 6 | 0.1 | £36.03 | 5 days | |
| SR50401501 | 1.5 | 4 | 4 | 50 | 6 | 0.1 | £36.03 | 5 days | |
| SR50401502 | 1.5 | 4 | 4 | 50 | 6 | 0.2 | £36.03 | 5 days | |
| SR50402001 | 2 | 4 | 6 | 50 | 6 | 0.1 | £36.03 | 5 days | |
| SR50402002 | 2 | 4 | 6 | 50 | 6 | 0.2 | £36.03 | 5 days | |
| SR50402502 | 2.5 | 4 | 7 | 50 | 6 | 0.2 | £36.03 | 5 days | |
| SR50403002 | 3 | 4 | 8 | 55 | 6 | 0.2 | £37.40 | 5 days | |
| SR50403003 | 3 | 4 | 8 | 55 | 6 | 0.3 | £37.40 | 5 days | |
| SR50403005 | 3 | 4 | 8 | 55 | 6 | 0.5 | £37.40 | 5 days | |
| SR50404002 | 4 | 4 | 10 | 55 | 6 | 0.2 | £37.40 | 5 days | |
| SR50404003 | 4 | 4 | 10 | 55 | 6 | 0.3 | £37.40 | 5 days | |
| SR50404005 Viewing | 4 | 4 | 10 | 55 | 6 | 0.5 | £37.40 | 5 days | |
| SR50405002 | 5 | 4 | 15 | 55 | 6 | 0.2 | £37.40 | 5 days | |
| SR50405003 | 5 | 4 | 15 | 55 | 6 | 0.3 | £37.40 | 5 days | |
| SR50405005 | 5 | 4 | 15 | 55 | 6 | 0.5 | £37.40 | 5 days | |
| SR50406003 | 6 | 4 | 15 | 60 | 6 | 0.3 | £37.40 | 5 days | |
| SR50406005 | 6 | 4 | 15 | 60 | 6 | 0.5 | £37.40 | 5 days | |
| SR50406010 | 6 | 4 | 15 | 60 | 8 | 1 | £37.40 | 5 days | |
| SR50408003 | 8 | 4 | 20 | 70 | 8 | 0.3 | £50.60 | 5 days | |
| SR50408005 | 8 | 4 | 20 | 70 | 8 | 0.5 | £50.60 | 5 days | |
| SR50408010 | 8 | 4 | 20 | 70 | 10 | 1 | £50.60 | 5 days | |
| SR50410005 | 10 | 4 | 25 | 75 | 10 | 0.5 | £71.50 | 5 days | |
| SR50410010 | 10 | 4 | 25 | 75 | 10 | 1 | £71.50 | 5 days | |
| SR50410015 | 10 | 4 | 25 | 75 | 10 | 1.5 | £71.50 | 5 days | |
| SR50410020 | 10 | 4 | 25 | 75 | 12 | 2 | £71.50 | 5 days | |
| SR50410003 | 10 | 4 | 25 | 75 | 10 | 0.3 | £71.50 | 5 days | |
| SR50412005 | 12 | 4 | 30 | 80 | 12 | 0.5 | £103.93 | 5 days | |
| SR50412010 | 12 | 4 | 30 | 80 | 12 | 1 | £103.93 | 5 days | |
| SR50412015 | 12 | 4 | 30 | 80 | 12 | 1.5 | £103.93 | 5 days | |
| SR50412020 | 12 | 4 | 30 | 80 | 12 | 2 | £103.93 | 5 days | |
| SR50412030 | 12 | 4 | 30 | 80 | 12 | 3 | £103.93 | 5 days | |
| SR50412040 | 12 | 4 | 30 | 80 | 16 | 4 | £103.93 | 5 days | |
| SR50414005 | 14 | 4 | 35 | 90 | 16 | 0.5 | £309.13 | 5 days | |
| SR50414010 | 14 | 4 | 35 | 90 | 16 | 1 | £309.13 | 5 days | |
| SR50416005 | 16 | 4 | 42 | 100 | 16 | 0.5 | £321.55 | In Stock | |
| SR50416010 | 16 | 4 | 42 | 100 | 16 | 1 | £321.55 | 5 days | |
| SR50418005 | 18 | 4 | 45 | 100 | 16 | 0.5 | £406.88 | 5 days | |
| SR50420005 | 20 | 4 | 48 | 100 | 20 | 0.5 | £493.75 | 5 days | |
| SR50420010 | 20 | 4 | 48 | 100 | 20 | 1 | £493.75 | 5 days |
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