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16EL10UNK20 - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 10 |
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Description
Carmex Thread Turning External Insert, Left-Hand, for UNC, UNF, UNEF, and UNS threads, is designed to simplify precision external threading. Built for machinists, engineers, and technicians who work with left-handed threads, this insert delivers efficient, consistent cutting across the most common thread standards.
This insert is part of an industry-leading range of thread turning inserts, recognized worldwide for quality and versatility. The laydown triangular geometry is engineered to handle everything from basic to demanding applications, providing a reliable solution in a single insert.
- Universal thread compatibility: Works with UNC, UNF, UNEF, and UNS left-hand threads, reducing setup time and tool changes so you can complete projects faster.
- Laydown triangular geometry: Triangular shape provides stable cutting action with efficient chip control, helping you achieve clean, consistent threads across a range of materials.
- Industry-leading, globally recognized range: Backed by a worldwide reputation for quality, this insert is designed to handle both basic and the most demanding threading tasks, reducing the need for multiple tools.
By choosing the Carmex Thread Turning External Insert, you gain a versatile, reliable tool that streamlines threading workflows, minimizes tool changes, and delivers consistent thread quality across batches. Its broad compatibility and robust design support faster setups, fewer stoppages, and predictable results from part to part.
Part Numbers
- Protool Part Number
- 16EL10UNK20
- 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.
