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11ER18WK20 - Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Right Hand
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | W (BSW BSF BSP BSB) |
| Pitch | 18 |
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Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Right Hand - 11ER18WK20 is a versatile carbide insert designed for external threading on right-hand threads. It’s part of Carmex’s industry-leading thread turning range and is engineered to handle a wide variety of thread standards—BSW, BSF, BSP, and BSB—so you can tackle most common threading tasks with a single, dependable insert.
This insert uses a laydown triangular geometry that delivers stable cutting action and consistent chip control, helping you achieve accurate thread forms with fewer passes. Whether you’re working on basic threads or more demanding profiles, it provides reliable performance across a broad spectrum of applications.
- Broad thread-standard compatibility: One insert supports BSW, BSF, BSP, and BSB external threads, simplifying tool logistics and reducing setup time across projects.
- Triangular laydown geometry for stable cutting: The laydown triangular design provides three durable cutting edges and efficient chip flow for consistent thread forms and smoother finishes, even in tougher materials.
- Right-hand orientation for external turning: Engineered for right-hand threads, ensuring clean engagement, predictable performance, and reliable results in demanding production environments.
With the Carmex 11ER18WK20 insert, you gain a versatile, dependable tool that reduces tool changes, improves thread quality, and supports a broad range of standards, helping you streamline workflows, cut cycle times, and deliver consistent, accurate threads across jobs. The robust triangular geometry and right-hand design provide durable performance in a variety of materials, giving you confidence to tackle both routine and high-demand threading tasks with a single, trusted insert.
Part Numbers
- Protool Part Number
- 11ER18WK20
- 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.



