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16IR18WK20 - Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | W (BSW BSF BSP BSB) |
| Pitch | 18 |
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The Carmex Thread Turning Internal Insert is a precision cutting insert designed for internal threading. Right-hand oriented and compatible with BSW, BSF, BSP, and BSB thread standards, this model (16IR18WK20) delivers versatility in a single, reliable tool. Its laydown triangular geometry provides stable engagement and consistent chip control, helping you achieve clean, accurate threads from basic to demanding jobs.
Model 16IR18WK20 is part of Carmex’s industry-leading range of thread turning inserts, recognized worldwide for dependable performance across a broad spectrum of applications. This insert is built to handle everyday threading tasks as well as more challenging production work, offering consistent results you can trust job after job.
- Broad thread-standard compatibility (BSW/BSF/BSP/BSB): Enables a single insert to cover multiple internal thread standards, reducing tool changes and simplifying inventory for diverse projects.
- Triangular laydown geometry for stable, clean threads: Delivers solid engagement and improved chip control, helping you achieve consistent thread finish across simple and demanding applications.
- Right-hand orientation for efficient production: Optimized for right-hand threads, ensuring smooth operation and reliable results with standard tooling setups.
This insert is designed to support efficient workflows, minimize downtime, and provide dependable threading performance across a wide range of materials and applications. By combining broad compatibility, stable geometry, and purposeful orientation, it helps you complete more work with fewer insert changes and more consistent results.
Part Numbers
- Protool Part Number
- 16IR18WK20
- 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.



