Please log in here to access all benefits, including promotional discounts and faster checkouts.
16IR20UNBLU - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 20 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
Our Carmex Thread Turning Internal Insert is a versatile solution for creating UN threads (UNC, UNF, UNEF, UNS) with a right-hand orientation. These industry-leading, laydown triangular inserts are designed to handle a broad range of applications—from basic to the most demanding—helping you simplify tooling and achieve consistent results.
- Broad UN threading compatibility: Covers UNC, UNF, UNEF, and UNS internal threads with a single insert, reducing tool changes and inventory while expanding threading capability across common standards.
- Right-hand internal-thread turning: Specifically configured for right-hand UN threads to ensure reliable engagement and consistent thread profiles across jobs.
- Durable triangular laydown design: Triangular laydown inserts deliver stable cutting action, efficient chip control, and long tool life across basic to demanding applications.
This insert streamlines UN-thread production by supporting multiple standards with one tool, enabling faster setups and fewer tool changes. Its robust geometry and durable construction deliver repeatable, high-quality threads, reducing downtime and supporting reliable performance across a range of materials and projects.
Part Numbers
- Protool Part Number
- 16IR20UNBLU
- 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.
