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Widin Carbide End Mill - 4 Flute Square Edge Long Neck 4mm x 45mm

SKU:ESLNS4040-45

The Widin Carbide End Mill is a 4-flute square-edge long-neck cutting tool designed to machine high-hardened materials up to HRc70 with precision and efficiency. Built for professionals and serio... Read more ↓
P
H
Cutter Diameter4
Number of Flutes4
Flute Length6
Overall Length90
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£38.88
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Widin Carbide End Mill is a 4-flute square-edge long-neck cutting tool designed to machine high-hardened materials up to HRc70 with precision and efficiency. Built for professionals and serious hobbyists, it delivers reliable performance in demanding applications and helps you achieve consistent, high-quality results.

Its long-neck design provides essential reach for draft-angle workpieces, offering the longer interference length required for different draft angles to ensure clearance and smooth operation. Crafted from a newly developed raw material and finished with an advanced coating, this end mill excels in dry cutting and high-speed cutting, delivering improved heat resistance, wear resistance, and overall tool performance. The ZSLNS20 construction is engineered to provide excellent workpiece finishes across a range of tough materials.

  • Long-neck design for draft-angle access: Extends reach into features with draft angles while maintaining clearance and stability, reducing interference during plunges and finishing passes.
  • Dry cutting and high-speed capability: Leveraging a newly developed raw material and advanced coating to enable fast material removal and coolant-free cutting, boosting productivity and heat management.
  • Premium finish and hardened-material reliability: Specifically built for materials up to HRc70 with the ZSLNS20 coating, delivering excellent surface finishes and longer tool life through enhanced wear and heat resistance.

This end mill helps you complete challenging machining tasks more efficiently while delivering consistent, high-quality finishes. The combination of long-neck geometry, robust coating, and advanced material composition supports dependable performance, reduces downtime, and gives you confidence in achieving precise, repeatable results on tough workpieces.

Part Numbers

Protool Part Number
ESLNS4040-45
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Widin Carbide End Mill - 4 Flute Square Edge Long Neck (ZSLNS40)

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You are viewing ESLNS4040-45. Click any other SKU to view its full details.

Product SKUCutter DiameterNumber of FlutesFlute LengthOverall LengthShank DiameterReachNeck DiameterPriceStock Order
ESLNS4010-4 141.550440.96£28.30 In Stock
ESLNS4010-6 141.550460.96£28.30 5 days
ESLNS4010-8 141.550480.96£28.30 5 days
ESLNS4010-10 141.5504100.96£28.30 5 days
ESLNS4015-4 1.542.2550441.44£26.38 5 days
ESLNS4015-6 1.542.2550461.44£28.30 5 days
ESLNS4015-8 1.542.2550481.44£28.30 5 days
ESLNS4015-10 1.542.25504101.44£28.30 In Stock
ESLNS4015-12 1.542.25554121.44£28.30 In Stock
ESLNS4015-14 1.542.25554141.44£28.30 5 days
ESLNS4015-16 1.542.25554161.44£28.30 5 days
ESLNS4015-18 1.542.25604181.44£30.70 5 days
ESLNS4015-20 1.542.25604201.44£30.70 5 days
ESLNS4015-25 1.542.25604251.44£31.68 5 days
ESLNS4020-4 24350441.92£26.38 In Stock
ESLNS4020-6 24350461.92£26.38 In Stock
ESLNS4020-8 24350481.92£28.30 In Stock
ESLNS4020-10 243504101.92£28.30 In Stock
ESLNS4020-12 243554121.92£28.30 5 days
ESLNS4020-14 243554141.92£28.30 5 days
ESLNS4020-16 243554161.92£28.30 5 days
ESLNS4020-18 243604181.92£28.30 In Stock
ESLNS4020-20 243604201.92£28.30 5 days
ESLNS4020-25 243654251.92£30.70 5 days
ESLNS4020-30 243704301.92£31.68 In Stock
ESLNS4025-8 2.543.7550482.4£28.30 In Stock
ESLNS4025-10 2.543.75504102.4£28.30 In Stock
ESLNS4025-12 2.543.75554122.4£28.30 In Stock
ESLNS4025-14 2.543.75554142.4£28.30 In Stock
ESLNS4025-16 2.543.75554162.4£28.30 5 days
ESLNS4025-18 2.543.75604182.4£28.30 In Stock
ESLNS4025-20 2.543.75604202.4£28.30 In Stock
ESLNS4025-25 2.543.75654252.4£30.70 In Stock
ESLNS4025-30 2.543.75704302.4£31.68 In Stock
ESLNS4030-8 344.555682.88£28.65 In Stock
ESLNS4030-10 344.5556102.88£32.75 In Stock
ESLNS4030-12 344.5606122.88£32.75 In Stock
ESLNS4030-14 344.5606142.88£32.75 In Stock
ESLNS4030-16 344.5606162.88£32.75 In Stock
ESLNS4030-18 344.5606182.88£32.75 5 days
ESLNS4030-20 344.5656202.88£33.78 In Stock
ESLNS4030-25 344.5706252.88£33.78 5 days
ESLNS4030-30 344.5756302.88£33.78 5 days
ESLNS4030-35 344.5806352.88£35.83 5 days
ESLNS4030-40 344.5906402.88£38.88 In Stock
ESLNS4040-12 446606123.85£32.75 5 days
ESLNS4040-16 446606163.85£32.75 5 days
ESLNS4040-20 446706203.85£33.78 5 days
ESLNS4040-25 446706253.85£33.78 5 days
ESLNS4040-30 446806303.85£35.83 In Stock
ESLNS4050-30 547.5706304.85£35.83 5 days
ESLNS4040-35 446806353.85£35.83 5 days
ESLNS4040-40 446906403.85£38.88 5 days
ESLNS4040-45 Viewing446906453.85£38.88 5 days
ESLNS4040-50 4461006503.85£45.05 5 days
ESLNS4050-16 547.5606164.85£32.75 In Stock
ESLNS4050-20 547.5606204.85£33.78 5 days
ESLNS4050-25 547.5706254.85£33.78 5 days
ESLNS4050-35 547.5806354.85£36.85 In Stock
ESLNS4050-40 547.5906404.85£38.88 In Stock
ESLNS4050-50 547.51006504.85£45.05 In Stock

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