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16ER9WK20 - 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 | 9 |
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Carmex Thread Turning External Insert - Right Hand, for BSW, BSF, BSP, and BSB standards (Model 16ER9WK20) is part of Carmex’s industry-leading line of thread turning inserts. These laydown triangular inserts are designed to cover the majority of thread standards you encounter, delivering reliable threading across a wide range of applications—from simple prototypes to demanding production runs.
Designed for professionals and DIYers who want consistent results with minimal tool changes, this external insert provides a practical, one-tool solution that fits standard threading operations in a compact, right-hand configuration.
- BSW, BSF, BSP, and BSB compatibility: Supports the major thread standards in a single insert family, reducing tool changes and helping keep production moving.
- Laydown triangular geometry for stable cutting: Provides consistent thread profiles and predictable results across various materials and depths.
- Right-hand external insert for reliable threading: Optimized for right-hand threads, delivering dependable performance and straightforward replacement in common setups.
By combining broad compatibility with a durable laydown geometry, the Carmex 16ER9WK20 external insert helps you keep production moving, reduce tool-change downtime, and achieve repeatable, high-quality threads across a range of materials and standards.
Part Numbers
- Protool Part Number
- 16ER9WK20
- 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.



