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Widin Carbide Square End Mill For Mold & Die - 4 Flute Long Neck - 4mm x 20mm
| Cutter Diameter | 4 |
| Number of Flutes | 4 |
| Flute Length | 4.5 |
| Overall Length | 60 |
Learn more about Klarna
Description
The Widin Carbide Square End Mill is a 4-flute long-neck carbide tool built for precision mold and die machining. It covers a cutting diameter range from 1.0 mm to 12.0 mm with a tight tolerance of +0/-0.03 mm, delivering consistent, repeatable results across profiles and features. This tool is designed for engineers, machinists, and hobbyists who need dependable performance in demanding mold work and precision components.
The extended neck creates a generous transition between the shank and cutting zone, reducing load on the cutting edges during deep cuts and aggressive milling. Coated with a durable W finish on premium carbide, it delivers enhanced wear resistance and longer tool life, supporting stable performance in mold and die work below 55 HRc as well as in pre-hardened steel, alloy steel, and carbon steel.
- Long-neck design for durability in deep pockets: The extended neck minimizes load on the cutting edges during deep cuts, reducing breakage risk and improving tool life in demanding mold and die work.
- Wide diameter range with tight tolerance: Ranges from 1.0 mm to 12.0 mm with a +0/-0.03 mm tolerance, delivering consistent sizing and repeatable parts across profiles.
- Coated carbide with 4-flute geometry for efficiency: Premium carbide, paired with a durable W coating, enables fast material removal, smoother cuts, and longer tool life for reliable performance in mold and die applications.
By combining depth-ready reach, precise sizing, and wear-resistant construction, this end mill helps you complete complex mold and die features with fewer tool changes and less rework. The result is faster cycles, cleaner finishes, and more predictable results when working with pre-hardened steel, alloy steel, or carbon steel under 55 HRc. Whether you're roughing cavities, finishing corners, or detailing small features, this tool provides consistent performance you can rely on for everyday production and specialty projects alike.
Part Numbers
- Protool Part Number
- UE51404020
- 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 Square End Mill For Mold & Die - 4 Flute Long Neck (WE514)
View full collection →You are viewing UE51404020. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Reach | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| UE51402014 | 2 | 4 | 3 | 50 | 4 | 14 | £23.30 | In Stock | |
| UE51402508 | 2.5 | 4 | 4 | 50 | 4 | 8 | £23.30 | 5 days | |
| UE51402026 | 2 | 4 | 3 | 60 | 4 | 26 | £23.93 | In Stock | |
| UE51401512 | 1.5 | 4 | 2.3 | 50 | 4 | 12 | £23.30 | 5 days | |
| UE51401510 | 1.5 | 4 | 2.3 | 50 | 4 | 10 | £23.30 | In Stock | |
| UE51402520 | 2.5 | 4 | 4 | 50 | 4 | 20 | £23.30 | 5 days | |
| UE51404022 | 4 | 4 | 4.5 | 65 | 6 | 22 | £29.48 | 5 days | |
| UE51402016 | 2 | 4 | 3 | 50 | 4 | 16 | £23.30 | In Stock | |
| UE51401520 | 1.5 | 4 | 2.3 | 50 | 4 | 20 | £23.30 | 5 days | |
| UE51401012 | 1 | 4 | 1.5 | 50 | 4 | 12 | £23.30 | 5 days | |
| UE51410045 | 10 | 4 | 15 | 100 | 10 | 45 | £77.68 | 5 days | |
| UE51405026 | 5 | 4 | 8 | 65 | 6 | 26 | £29.48 | 5 days | |
| UE51405020 | 5 | 4 | 8 | 60 | 6 | 20 | £29.05 | In Stock | |
| UE51404030 | 4 | 4 | 4.5 | 70 | 6 | 30 | £34.25 | 5 days | |
| UE51401008 | 1 | 4 | 1.5 | 50 | 4 | 8 | £23.30 | In Stock | |
| UE51406032 | 6 | 4 | 9 | 90 | 6 | 32 | £32.08 | 5 days | |
| UE51404060 | 4 | 4 | 4.5 | 100 | 6 | 60 | £52.95 | 5 days | |
| UE51404045 | 4 | 4 | 4.5 | 90 | 6 | 45 | £44.88 | 5 days | |
| UE51404040 | 4 | 4 | 4.5 | 80 | 6 | 40 | £40.95 | 5 days | |
| UE51404026 | 4 | 4 | 4.5 | 65 | 6 | 26 | £29.48 | In Stock | |
| UE51403060 | 3 | 4 | 4.5 | 100 | 6 | 60 | £52.95 | 5 days | |
| UE51403030 | 3 | 4 | 4.5 | 70 | 6 | 30 | £34.25 | 5 days | |
| UE51403026 | 3 | 4 | 4.5 | 65 | 6 | 26 | £29.48 | 5 days | |
| UE51403018 | 3 | 4 | 4.5 | 60 | 6 | 18 | £29.05 | 5 days | |
| UE51402540 | 2.5 | 4 | 4 | 80 | 4 | 40 | £30.85 | 5 days | |
| UE51402530 | 2.5 | 4 | 4 | 70 | 4 | 30 | £27.50 | In Stock | |
| UE51402512 | 2.5 | 4 | 4 | 50 | 4 | 12 | £23.30 | In Stock | |
| UE51402050 | 2 | 4 | 3 | 110 | 4 | 50 | £36.70 | 5 days | |
| UE51401518 | 1.5 | 4 | 2.3 | 50 | 4 | 18 | £23.30 | In Stock | |
| UE51401214 | 1.2 | 4 | 1.8 | 50 | 4 | 14 | £23.30 | 5 days | |
| UE51401206 | 1.2 | 4 | 1.8 | 50 | 4 | 6 | £23.30 | In Stock | |
| UE51401204 | 1.2 | 4 | 1.8 | 50 | 4 | 4 | £23.30 | 5 days | |
| UE51401007 | 1 | 4 | 1.5 | 50 | 4 | 7 | £23.30 | 5 days | |
| UE51401004 | 1 | 4 | 1.5 | 50 | 4 | 4 | £23.30 | In Stock | |
| UE51412040 | 12 | 4 | 20 | 90 | 12 | 40 | £113.28 | In Stock | |
| UE51412050 | 12 | 4 | 20 | 110 | 12 | 50 | £122.23 | 5 days | |
| UE51412035 | 12 | 4 | 20 | 80 | 12 | 35 | £108.95 | In Stock | |
| UE51410035 | 10 | 4 | 15 | 80 | 10 | 35 | £72.60 | In Stock | |
| UE51410030 | 10 | 4 | 15 | 75 | 10 | 30 | £71.33 | In Stock | |
| UE51408042 | 8 | 4 | 12 | 100 | 8 | 42 | £56.80 | 5 days | |
| UE51408030 | 8 | 4 | 12 | 80 | 8 | 30 | £52.98 | In Stock | |
| UE51408025 | 8 | 4 | 12 | 70 | 8 | 25 | £51.20 | In Stock | |
| UE51406030 | 6 | 4 | 9 | 70 | 6 | 30 | £30.15 | 5 days | |
| UE51406015 | 6 | 4 | 9 | 60 | 6 | 15 | £29.05 | In Stock | |
| UE51406020 | 6 | 4 | 9 | 60 | 6 | 20 | £29.05 | In Stock | |
| UE51405040 | 5 | 4 | 8 | 80 | 6 | 40 | £40.95 | 5 days | |
| UE51405060 | 5 | 4 | 8 | 100 | 6 | 60 | £52.95 | 5 days | |
| UE51405050 | 5 | 4 | 8 | 90 | 6 | 50 | £48.98 | 5 days | |
| UE51405035 | 5 | 4 | 8 | 75 | 6 | 35 | £34.95 | 5 days | |
| UE51405030 | 5 | 4 | 8 | 70 | 6 | 30 | £34.25 | In Stock | |
| UE51405016 | 5 | 4 | 8 | 60 | 6 | 16 | £29.05 | In Stock | |
| UE51404050 | 4 | 4 | 4.5 | 100 | 6 | 50 | £50.08 | In Stock | |
| UE51404020 Viewing | 4 | 4 | 4.5 | 60 | 6 | 20 | £29.05 | 5 days | |
| UE51404035 | 4 | 4 | 4.5 | 70 | 6 | 35 | £34.25 | 5 days | |
| UE51404016 | 4 | 4 | 4.5 | 60 | 6 | 16 | £29.05 | In Stock | |
| UE51404018 | 4 | 4 | 4.5 | 60 | 6 | 18 | £29.05 | 5 days | |
| UE51404014 | 4 | 4 | 4.5 | 60 | 6 | 14 | £29.05 | 5 days | |
| UE51404012 | 4 | 4 | 4.5 | 50 | 6 | 12 | £27.98 | In Stock | |
| UE51404010 | 4 | 4 | 4.5 | 50 | 6 | 10 | £27.98 | In Stock | |
| UE51404008 | 4 | 4 | 4.5 | 50 | 6 | 8 | £27.98 | In Stock | |
| UE51403050 | 3 | 4 | 4.5 | 100 | 6 | 50 | £50.08 | In Stock | |
| UE51403045 | 3 | 4 | 4.5 | 90 | 6 | 45 | £44.88 | 5 days | |
| UE51403040 | 3 | 4 | 4.5 | 80 | 6 | 40 | £40.95 | 5 days | |
| UE51403035 | 3 | 4 | 4.5 | 70 | 6 | 35 | £34.25 | 5 days | |
| UE51403022 | 3 | 4 | 4.5 | 65 | 6 | 22 | £29.48 | 5 days | |
| UE51403020 | 3 | 4 | 4.5 | 60 | 6 | 20 | £29.05 | 5 days | |
| UE51403016 | 3 | 4 | 4.5 | 60 | 6 | 16 | £29.05 | In Stock | |
| UE51403014 | 3 | 4 | 4.5 | 60 | 6 | 14 | £29.05 | 5 days | |
| UE51403012 | 3 | 4 | 4.5 | 50 | 6 | 12 | £27.98 | 5 days | |
| UE51403010 | 3 | 4 | 4.5 | 50 | 6 | 10 | £27.98 | 5 days | |
| UE51403006 | 3 | 4 | 4.5 | 50 | 6 | 6 | £27.98 | In Stock | |
| UE51403008 | 3 | 4 | 4.5 | 50 | 6 | 8 | £27.98 | In Stock | |
| UE51402550 | 2.5 | 4 | 4 | 100 | 4 | 50 | £36.70 | In Stock | |
| UE51402545 | 2.5 | 4 | 4 | 90 | 4 | 45 | £34.55 | 5 days | |
| UE51402535 | 2.5 | 4 | 4 | 70 | 4 | 35 | £27.50 | In Stock | |
| UE51402522 | 2.5 | 4 | 4 | 60 | 4 | 22 | £23.93 | 5 days | |
| UE51402526 | 2.5 | 4 | 4 | 60 | 4 | 26 | £23.93 | In Stock | |
| UE51402518 | 2.5 | 4 | 4 | 50 | 4 | 18 | £23.30 | 5 days | |
| UE51402516 | 2.5 | 4 | 4 | 50 | 4 | 16 | £23.30 | In Stock | |
| UE51402514 | 2.5 | 4 | 4 | 50 | 4 | 14 | £23.30 | 5 days | |
| UE51402510 | 2.5 | 4 | 4 | 50 | 4 | 10 | £23.30 | 5 days | |
| UE51402060 | 2 | 4 | 3 | 110 | 4 | 60 | £40.18 | 5 days | |
| UE51402045 | 2 | 4 | 3 | 100 | 4 | 45 | £34.55 | 5 days | |
| UE51402035 | 2 | 4 | 3 | 80 | 4 | 35 | £27.50 | 5 days | |
| UE51402040 | 2 | 4 | 3 | 90 | 4 | 40 | £30.85 | In Stock | |
| UE51402022 | 2 | 4 | 3 | 60 | 4 | 22 | £23.93 | 5 days | |
| UE51402030 | 2 | 4 | 3 | 70 | 4 | 30 | £27.50 | 5 days | |
| UE51402020 | 2 | 4 | 3 | 50 | 4 | 20 | £23.30 | 5 days | |
| UE51402018 | 2 | 4 | 3 | 50 | 4 | 18 | £23.30 | 5 days | |
| UE51402010 | 2 | 4 | 3 | 50 | 4 | 10 | £23.30 | In Stock | |
| UE51402012 | 2 | 4 | 3 | 50 | 4 | 12 | £23.30 | 5 days | |
| UE51402008 | 2 | 4 | 3 | 50 | 4 | 8 | £23.30 | In Stock | |
| UE51402006 | 2 | 4 | 3 | 50 | 4 | 6 | £23.30 | 5 days | |
| UE51401530 | 1.5 | 4 | 2.3 | 70 | 4 | 30 | £27.50 | 5 days | |
| UE51401526 | 1.5 | 4 | 2.3 | 60 | 4 | 26 | £23.93 | 5 days | |
| UE51401522 | 1.5 | 4 | 2.3 | 60 | 4 | 22 | £23.93 | 5 days | |
| UE51401516 | 1.5 | 4 | 2.3 | 50 | 4 | 16 | £23.30 | 5 days | |
| UE51401514 | 1.5 | 4 | 2.3 | 50 | 4 | 14 | £23.30 | 5 days | |
| UE51401508 | 1.5 | 4 | 2.3 | 50 | 4 | 8 | £23.30 | 5 days | |
| UE51401507 | 1.5 | 4 | 2.3 | 50 | 4 | 7 | £23.30 | In Stock | |
| UE51401506 | 1.5 | 4 | 2.3 | 50 | 4 | 6 | £23.30 | 5 days | |
| UE51401505 | 1.5 | 4 | 2.3 | 50 | 4 | 5 | £23.30 | 5 days | |
| UE51401504 | 1.5 | 4 | 2.3 | 50 | 4 | 4 | £23.30 | 5 days | |
| UE51401230 | 1.2 | 4 | 1.8 | 70 | 4 | 30 | £31.48 | In Stock | |
| UE51401226 | 1.2 | 4 | 1.8 | 60 | 4 | 26 | £29.18 | In Stock | |
| UE51401212 | 1.2 | 4 | 1.8 | 50 | 4 | 12 | £23.30 | 5 days | |
| UE51401220 | 1.2 | 4 | 1.8 | 50 | 4 | 20 | £23.30 | 5 days | |
| UE51401216 | 1.2 | 4 | 1.8 | 50 | 4 | 16 | £23.30 | 5 days | |
| UE51401210 | 1.2 | 4 | 1.8 | 50 | 4 | 10 | £23.30 | In Stock | |
| UE51401208 | 1.2 | 4 | 1.8 | 50 | 4 | 8 | £23.30 | 5 days | |
| UE51401050 | 1 | 4 | 1.5 | 100 | 4 | 50 | £39.30 | In Stock | |
| UE51401040 | 1 | 4 | 1.5 | 80 | 4 | 40 | £34.80 | In Stock | |
| UE51401030 | 1 | 4 | 1.5 | 70 | 4 | 30 | £31.48 | In Stock | |
| UE51401026 | 1 | 4 | 1.5 | 60 | 4 | 26 | £29.18 | In Stock | |
| UE51401020 | 1 | 4 | 1.5 | 50 | 4 | 20 | £23.30 | 5 days | |
| UE51401022 | 1 | 4 | 1.5 | 60 | 4 | 22 | £23.93 | In Stock | |
| UE51401016 | 1 | 4 | 1.5 | 50 | 4 | 16 | £23.30 | 5 days | |
| UE51401014 | 1 | 4 | 1.5 | 50 | 4 | 14 | £23.30 | 5 days | |
| UE51401018 | 1 | 4 | 1.5 | 50 | 4 | 18 | £23.30 | 5 days | |
| UE51401010 | 1 | 4 | 1.5 | 50 | 4 | 10 | £23.30 | 5 days | |
| UE51401006 | 1 | 4 | 1.5 | 50 | 4 | 6 | £23.30 | In Stock | |
| UE51401005 | 1 | 4 | 1.5 | 50 | 4 | 5 | £23.30 | In Stock | |
| UE51401003 | 1 | 4 | 1.5 | 50 | 4 | 3 | £23.30 | In Stock | |
| UE51401002 | 1 | 4 | 1.5 | 50 | 4 | 2 | £23.30 | In Stock |
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