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16IR20WK20 - 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 | 20 |
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Description
The Carmex Thread Turning Internal Insert is a versatile cutting tool designed for precise internal threading tasks. It sits at the core of our industry-leading range of thread turning inserts, trusted worldwide for reliability and consistent results across a broad spectrum of jobs. Designed for right-hand internal threads, this W-series insert supports BSW, BSF, BSP, and BSB forms, making it suitable for everything from routine production to more demanding applications. Model: 16IR20WK20.
- Extensive thread-standard compatibility: Covers BSW, BSF, BSP, and BSB internal thread forms so one insert can handle a wide range of jobs, reducing tool changes and inventory needs.
- Laydown triangular geometry for stable cutting: The triangular, laydown design promotes firm engagement with the workpiece, minimizes vibration, and delivers consistent thread profiles with a smoother bore finish—even on tougher materials.
- Central mounting bore for quick, precise setup: Built-in bore aligns quickly with the tool holder, speeding setup, improving repeatability, and helping keep production running smoothly.
Whether you’re performing routine internal threads or tackling demanding production runs, this insert helps you work faster with fewer tool changes. Its broad compatibility means you can cover multiple standards with a single tool, while the stable geometry reduces chatter and improves thread quality. The central bore speeds setup and enhances alignment for repeatable results in busy shops. Model 16IR20WK20 is designed to deliver dependable performance across a wide range of internal threading tasks.
Part Numbers
- Protool Part Number
- 16IR20WK20
- 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.
