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


16EL10WK20 - Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | W (BSW BSF BSP BSB) |
| Pitch | 10 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
The Carmex Thread Turning External Insert - W is a versatile tool designed for external threading tasks. Specifically engineered for left-handed threads, it supports BSW, BSF, BSP, and BSB standards within a single, reliable insert family. This laydown triangular insert is part of our industry-leading range, trusted worldwide for consistent thread profiles across a wide range of applications.
Ideal for engineers, machinists, fabricators, and even skilled hobbyists, it handles everything from basic to demanding threading jobs with stable engagement, clean finishes, and straightforward setup.
- Broad thread-standard coverage: Compatible with BSW, BSF, BSP and BSB external thread forms, reducing the need for multiple inserts and cutting tools and helping keep production moving.
- Left-hand threading design: Optimized for left-hand threads, delivering consistent thread profiles and reliable performance across a variety of materials and production runs.
- Durable laydown triangular geometry: Provides stable engagement and efficient chip control, minimizing insert changes and maintaining predictable, smooth threading results.
This insert simplifies tooling, improves workflow, and helps you achieve reliable, repeatable thread quality. Its broad compatibility means fewer part-tool pairings to manage, while the left-hand orientation and durable geometry support steady cutting action, reducing downtime and helping you meet production targets with confidence.
Part Numbers
- Protool Part Number
- 16EL10WK20
- 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.



