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Carmex Thread Turning Internal Insert - Stub Acme - Left Hand - 16IL12STACMEK20
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | Stub Acme |
| Pitch | 12 |
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Description
The Carmex Thread Turning Internal Insert - Stub Acme - Left Hand - 16IL12STACMEK20 is a compact, precision internal threading insert designed for reliability and versatility. Part of our industry-leading range, these laydown triangular inserts provide a solution for the majority of thread standards in use today, making it easier to handle a wide range of applications—from simple to demanding tasks.
Designed for engineers, machinists, and maintenance professionals, this insert’s left-hand, Stub Acme geometry is optimized for internal threads. The result is consistent starts and dependable performance across diverse applications.
- Broad thread-standard compatibility: The laydown triangular design is built to cover the majority of thread standards in use today, helping you tackle a wide range of internal threading tasks with a single insert.
- Laydown triangular geometry for consistent results: The triangular laydown shape provides stable cutting action and predictable finishes across various materials and applications.
- Left-hand Stub Acme internal threading: Specifically tailored for internal threads with Stub Acme profiles, enabling precise thread formation and reliable finishes in demanding jobs.
This insert supports a flexible, efficient workflow by handling many common thread configurations with one tool. Its proven geometry and design cultivate repeatable, quality results, so you can complete more work with confidence and minimize fuss on the shop floor.
Part Numbers
- Protool Part Number
- 16IL12STACMEK20
- 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.
