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16IL12UNK20 - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 12 |
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Description
Carmex Thread Turning Internal Insert is a versatile, high‑quality laydown triangular insert designed for internal threading. Built to handle UNC, UNF, UNEF, and UNS standards, it’s an ideal choice for machinists, tooling buyers, engineers, and hobbyists who need reliable, one‑insertion capability across a range of thread types. The left‑hand version is specifically suited for projects that use left‑hand threads, helping you complete jobs without swapping tools.
- Universal thread compatibility: Covers UNC, UNF, UNEF, and UNS with a single insert, simplifying your tool inventory and reducing the need for multiple specialty inserts.
- Left‑hand threading capability: Designed for internal left‑hand threads, ensuring consistent cutting action and predictable results on targeted workpieces.
- Stable, laydown triangular geometry: Triangular insert geometry provides steady engagement and repeatable performance from basic to demanding applications, helping achieve smooth finishes and accurate thread profiles.
This insert supports efficient, high‑quality internal threading workflows. By handling a broad range of thread standards with one reliable tool, you can reduce tool changes, minimize downtime, and maintain consistent results across diverse projects. It’s a dependable choice for teams seeking accuracy, workflow simplicity, and long‑lasting performance in threaded components.
Part Numbers
- Protool Part Number
- 16IL12UNK20
- 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.
