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Carmex Thread Turning External Insert - NPT - Right Hand - 16ER8NPTK20
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | NPT |
| Pitch | 8 |
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Description
The Carmex Thread Turning External Insert - NPT - Right Hand - 16ER8NPTK20 is a purpose-built cutting insert designed for external thread turning on NPT right-hand threads. Its laydown triangular geometry is optimized to cover a broad range of thread standards with a single, reliable solution. Whether you're performing basic threading or tackling more demanding production runs, this insert delivers consistent results across many common thread standards.
Designed for a wide audience—engineers, buyers, tradespeople, and hobbyists—the 16ER8NPTK20 helps simplify setup and reduce tool changes by accommodating the majority of today’s thread standards in one dependable insert.
- Broad thread standard coverage: Designed to handle the majority of thread standards in use today, simplifying tooling choices and reducing the need for multiple inserts.
- NPT Right-Hand external threading: Specifically engineered for external NPT right-hand threads to ensure accurate threading and reliable engagement.
- Triangular laydown geometry for stable cutting: The laydown geometry promotes steady cutting action, consistent results, and longer insert life.
Selecting the Carmex 16ER8NPTK20 insert supports reliable, repeatable external thread turning across a wide range of standards, helping you improve throughput, reduce setup time, and maintain quality on both basic and demanding jobs.
Part Numbers
- Protool Part Number
- 16ER8NPTK20
- 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.
