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Carmex Vertical Milling CMT Three Flute Insert - Threading - C18I12UNMT7

SKU:C18I12UNMT7

The Carmex Vertical Milling CMT Three Flute Insert - Threading - C18I12UNMT7 is a high-precision vertical milling insert designed for threading, grooves, and chamfers. It’s built for production e... Read more ↓
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M
K
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ApplicationThreading
Thread FormUN
Internal or ExternalInternal
Insert Diameter17.8
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£41.92
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 Carmex Vertical Milling CMT Three Flute Insert - Threading - C18I12UNMT7 is a high-precision vertical milling insert designed for threading, grooves, and chamfers. It’s built for production environments and versatile enough for engineers, machinists, and shop floor use where reliable threaded features are required from a single insert.

Ground profile inserts deliver exceptional precision and performance, enabling accurate thread forms and excellent surface quality even under demanding cutting conditions. The solid, accurate clamping method ensures full repeatability, and the same insert can be used for both right-hand and left-hand threads. When paired with compatible tooling, this system supports a wide range of vertical-mill threading tasks and can be complemented by chamfer inserts for additional capability.

  • Ground Profile for Precision: Delivers high-precision thread forms and consistent performance for clean, repeatable results in challenging materials.
  • High-Parameter Performance: Optimized for aggressive machining with excellent surface finish, reducing finishing steps and downtime.
  • Universal RH/LH Threading and Ready Tooling: The same insert works for right- or left-hand threads; toolholders include Weldon shank and coolant bore, with chamfer inserts available for expanded applications.

This combination helps streamline your workflow, improve throughput, and deliver reliable, high-quality threaded features and chamfers across a range of applications.

Part Numbers

Protool Part Number
C18I12UNMT7
Brand
Carmex
Category
Thread 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: Carmex Vertical Milling CMT Multi Flute Inserts - Threading - UN

View full collection →

You are viewing C18I12UNMT7. Click any other SKU to view its full details.

Product SKUInsert SizePitchPriceStock Order
C10I13UNMT7 1013£33.36 In Stock
C25I8UNMT7 258£47.16 In Stock
C18I12UNMT7 Viewing17.812£41.92 5 days
C25I4UNMT7 254£47.16 In Stock
C18I8UNMT7 17.88£41.92 In Stock
C18I32UNMT7 17.832£45.76 In Stock
C18I20UNMT7 17.820£41.92 In Stock
C18I16UNMT7 17.816£41.92 5 days
C18I14UNMT7 17.814£41.92 5 days
C12I32UNMT7 1232£37.36 In Stock
C12I24UNMT7 1224£33.76 5 days
C12I20UNMT7 1220£33.76 In Stock
C12I18UNMT7 1218£33.76 5 days
C12I11UNMT7 1211£33.76 In Stock
C12I10UNMT7 1210£33.76 In Stock
C25I7UNMT7 257£47.16 5 days
C25I6UNMT7 256£47.16 5 days
C25I5UNMT7 255£47.16 5 days
C18I9UNMT7 17.89£41.92 5 days
C18I28UNMT7 17.828£41.92 In Stock
C18I24UNMT7 17.824£41.92 In Stock
C18I18UNMT7 17.818£41.92 In Stock
C18I11UNMT7 17.811£41.92 In Stock
C12I28UNMT7 1228£33.76 In Stock
C12I16UNMT7 1216£33.76 5 days
C12I12UNMT7 12.412£33.76 In Stock
C10I20UNMT7 1020£33.36 5 days
C10I18UNMT7 1018£33.36 In Stock
C10I12UNMT7 1012£33.36 In Stock

Complete Your Project

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