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Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand - 08IL20UNBXC

08IL20UNBXC - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand

SKU:08IL20UNBXC

The Carmex Thread Turning Internal Insert is a left-hand, internal threading insert designed to form UNC, UNF, UNEF, and UNS threads in bores and housings. It belongs to our industry-leading line... Read more ↓
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Thread TypeInternal
Thread DirectionLeft Hand
Thread FormUN (UNC UNF UNEF UNS)
Pitch20
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£13.88
per item · pack of 10
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Sold in packs of 10
Free delivery over £50 ex VAT
Secure checkout
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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Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Thread Turning Internal Insert is a left-hand, internal threading insert designed to form UNC, UNF, UNEF, and UNS threads in bores and housings. It belongs to our industry-leading line of thread turning inserts and is built to handle a broad range of thread standards with consistent results. This laydown triangular design delivers reliable performance across a wide spectrum of applications, from simple threading tasks to more demanding jobs.

  • Broad thread-standards compatibility: Works with UNC, UNF, UNEF, and UNS internal threads, reducing the need for multiple inserts and tool changes while delivering dependable results across common thread forms.
  • Rigid triangular laydown geometry: Provides stable cutting action, minimizes vibration, and helps produce clean, consistent threads with fewer passes.
  • Left-hand design for flexible setups: Specifically engineered for left-handed threading operations, enabling easy integration with standard CNC or manual machines and faster setup changes.

Designed to streamline internal threading workflows, this insert enables reliable performance across a wide range of UN thread forms in a variety of materials. Its versatile compatibility, stable cutting geometry, and left-hand orientation help reduce downtime, simplify tool management, and deliver consistently high-quality threaded features on every job.

Part Numbers

Protool Part Number
08IL20UNBXC
Brand
Carmex
Category
Thread Turning
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.

Complete Your Project

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