Please log in here to access all benefits, including promotional discounts and faster checkouts.


16IL2.5ISOBLU - Carmex Thread Turning Internal Insert - Metric - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | Metric |
| Pitch | 2.5 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
Carmex Thread Turning Internal Insert is a metric, left-hand threading insert designed for precise internal threading operations. Its laydown triangular geometry delivers stable cutting and broad compatibility across a wide range of thread standards, making it versatile for many jobs.
Whether you’re a design engineer, machinist, buyer, tradesperson, or hobbyist, this insert provides reliable performance for everything from simple to demanding threading tasks.
- Broad compatibility with metric left-hand thread standards: Covers the majority of thread standards used today, helping you simplify tool selection and speed setup so you can move quickly from part to part.
- Laydown triangular geometry for stable, controlled cutting: Delivers rigid engagement, improved chip control, and smooth engagement for consistent thread quality and easier finishing.
- Suitable for basic to demanding applications: Designed to handle a wide range of tasks without changing tools, reducing downtime and supporting steady production schedules.
This insert helps you streamline workflows, cut setup time, and achieve reliable, repeatable internal threads across parts—supporting higher quality results and more efficient manufacturing.
Part Numbers
- Protool Part Number
- 16IL2.5ISOBLU
- 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.



