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16EL18WBMA - 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 | 18 |
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The Carmex Thread Turning External Insert - W (BSW BSF BSP BSB) - Left Hand - 16EL18WBMA is a versatile external threading insert designed to cover a wide range of thread standards. These high-quality laydown triangular inserts are built to address the majority of thread standards in use today, delivering dependable performance from basic tasks to demanding applications.
Designed for a broad audience—from engineers and buyers to tradespeople and hobbyists—this insert makes external thread turning straightforward. Its compatibility with multiple standards helps you streamline tooling, reduce setup time, and approach mixed-thread projects with confidence.
- Broad thread-standard compatibility across BSW, BSF, BSP, and BSB: One insert covers the majority of common thread standards, reducing the need for multiple tools and simplifying inventory so you can switch between jobs quickly without sacrificing accuracy.
- Durable laydown triangular design for stable cutting and long life: The laydown geometry provides stable, predictable cutting and helps extend tool life, delivering consistent thread profiles across a range of applications from simple to demanding.
- Left-hand threading orientation for seamless setup: Optimized for external thread turning in left-handed configurations, enabling reliable results and faster changeovers in production environments.
With this insert, you gain a single, reliable solution that adapts to multiple thread standards, streamlines your workflow, and delivers consistent, high-quality threads. The robust design minimizes downtime, reduces rework, and helps you meet tight production schedules with confidence.
Part Numbers
- Protool Part Number
- 16EL18WBMA
- 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.










