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16IL3.0ISOBLU - Carmex Thread Turning Internal Insert - Metric - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | Metric |
| Pitch | 3 |
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The ones our customers buy most.Description
The Carmex Thread Turning Internal Insert is a metric, left-hand threading insert designed for precise internal threads. Its laydown triangular geometry provides stable cutting and broad compatibility with the majority of metric left-hand thread standards used in modern shops.
Ideal for a wide range of tasks—from simple pilot threads to demanding production runs—the insert helps you achieve accurate, consistent thread forms with fewer tool changes and smoother operation. Model: 16IL3.0ISOBLU.
- Broad thread standard compatibility: Designed to cover the majority of metric left-hand thread standards, reducing the need to stock multiple inserts and enabling quick job changes.
- Laydown triangular geometry for stable cutting: The laydown triangular shape provides solid support in the internal diameter, improving chip control and delivering clean, repeatable thread forms.
- Reliable performance across basic to demanding applications: From simple threads to high-volume production, this insert maintains consistent results, helping minimize downtime and rework.
This insert offers a dependable threading solution that helps streamline internal threading work, improves first-pass thread quality, and enhances overall workflow on busy machine shops. Built to endure everyday use, it provides consistent performance across a range of applications and materials.
Part Numbers
- Protool Part Number
- 16IL3.0ISOBLU
- 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.



