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Carmex Thread Turning External Insert - American Butress - Right Hand - 16ER16ABUTK20
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | American Butress |
| Pitch | 16 |
| Insert Size | 16 |
| Grade | K20 |
Learn more about Klarna
The Carmex Thread Turning External Insert is a high-quality, laydown triangular insert designed specifically for external thread turning. Built to cover a broad range of thread standards, it provides a versatile solution for engineers, buyers, tradespeople, hobbyists, and shop floors alike. This right-hand variant—American Butress—fits into standard tooling setups, helping you achieve accurate threads with confidence.
- Wide thread-standard compatibility: Covers the majority of thread standards in use today, reducing tool changes and expanding your job scope so you can tackle multiple projects with a single insert.
- Triangular laydown geometry for stable cutting: The laydown triangular design promotes smooth engagement and helps deliver consistent thread forms across a variety of materials and threading tasks.
- Versatile for basic to demanding applications: Designed to perform reliably on everything from simple threading to more demanding, precision work, supporting steady productivity and predictable results.
This insert is a practical, dependable choice for anyone who regularly performs external threading. Its broad compatibility and rugged geometry help streamline setups, reduce downtime, and maintain consistent thread quality across diverse applications—making it an essential tool for a wide range of users, from professional machinists to DIY enthusiasts.
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | American Butress |
| Pitch | 16 |
| Insert Size | 16 |
| Grade | K20 |
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.
