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16IR1.0ISO3MK20 - Carmex Thread Turning Internal Insert - Metric - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | Metric |
| Pitch | 1 |
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The Carmex Thread Turning Internal Insert is a metric, right-hand insert designed for precision internal threading across a wide range of materials. This insert is ideal for machine shops, contract manufacturers, and engineering teams, delivering dependable performance in everyday and demanding threading tasks.
These laydown triangular inserts are part of Carmex's industry-leading range and are designed to handle the majority of thread standards available today. They support a spectrum of applications—from simple to highly demanding—while maintaining consistent results.
- Broad thread-standard compatibility: Covers a wide range of internal thread standards with a single insert, reducing tool changes and inventory while keeping your production moving.
- Laydown triangular geometry: Delivers stable, uniform cutting action and helps achieve consistent thread quality across different materials, improving overall tool life and reliability.
- Metric, right-hand internal threading design: Specifically engineered for metric right-hand threads, ensuring correct orientation and reliable engagement in threading operations.
This insert helps streamline work processes by enabling faster setups, reducing tool changes, and delivering repeatable, reliable internal threads across diverse parts and materials. Its robust geometry and targeted metric, right-hand design contribute to smoother production runs, lower downtime, and improved consistency in thread quality from the first cut to the last.
Part Numbers
- Protool Part Number
- 16IR1.0ISO3MK20
- 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.



