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


16IL0.75ISOK20 - Carmex Thread Turning Internal Insert - Metric - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | Metric |
| Pitch | 0.75 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
Carmex Thread Turning Internal Insert offers a versatile solution for internal threading needs with metric compatibility and left-hand capability. These laydown triangular inserts are designed to cover a broad range of thread standards in a single tool, making them ideal for workshops, job shops, and production environments that require reliable internal threads without constant tooling changes.
- Broad compatibility with metric thread standards: Built to address the majority of metric internal thread forms, enabling you to machine a wide range of sizes with one insert and reducing the need for multiple tools or frequent tool changes.
- Laydown triangular design for stable, efficient cutting: Three cutting edges share wear evenly, delivering a smooth finish, reliable thread profiles, and better chip control for consistent results across materials and applications.
- Left-hand threading optimized and secure: Specifically engineered for left-hand threads with secure retention in the holder to minimize chatter and maintain accurate pitch and depth throughout the operation.
This insert supports a streamlined workflow from basic to demanding threading tasks, helping you achieve dependable internal threads with fewer interruptions. By choosing this Carmex insert, you gain a durable, adaptable tool that supports faster setups, consistent performance, and confident results across a wide range of metric left-hand threading projects.
Part Numbers
- Protool Part Number
- 16IL0.75ISOK20
- 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.



