Please log in here to access all benefits, including promotional discounts and faster checkouts.


11IL14WK20 - Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | W (BSW BSF BSP BSB) |
| Pitch | 14 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
Carmex Thread Turning Internal Insert – Left Hand, model 11IL14WK20, is part of Carmex's industry-leading range of internal threading inserts. These laydown triangular inserts are designed to cover the majority of today’s thread standards, providing dependable internal threading for a wide variety of applications.
Ideal for engineers, machinists, and hobbyists, this left-hand internal insert supports BSW, BSF, BSP, and BSB standards, making it a versatile choice for both basic and more demanding threading tasks.
- Broad thread-standard compatibility: Covers BSW, BSF, BSP, and BSB, reducing the need for multiple inserts and simplifying internal threading plans.
- Triangular laydown geometry: Provides stable engagement and consistent results, promoting smooth cutting and reliable thread formation across a range of materials.
- Left-hand orientation for internal threading: Specifically configured for left-handed internal threads, enabling efficient machining with the appropriate tooling setup.
This insert delivers dependable performance for internal thread turning across basic to demanding applications. With its broad standard support, left-hand configuration, and robust laydown geometry, it helps you complete internal threading tasks with confidence and consistent finishes.
Part Numbers
- Protool Part Number
- 11IL14WK20
- 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.



