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16ER3.5ISOBLU - Carmex Thread Turning External Insert - Metric - Right Hand
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | Metric |
| Pitch | 3.5 |
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Description
Carmex Thread Turning External Insert — Metric — Right Hand — 16ER3.5ISOBLU is a versatile thread turning insert designed for external metric threading. Its laydown triangular geometry delivers reliable performance across a wide range of thread standards, from basic projects to the most demanding applications, making it suitable for shops, engineers, technicians, and hobbyists alike.
- Broad compatibility across thread standards: This insert is designed to cover the majority of thread standards available today, helping you tackle diverse projects without swapping tools or maintaining a large inventory.
- Stable laydown triangular geometry: The geometry provides rigidity and consistent cutting action, enabling smooth finishes and reliable thread form even on tougher materials.
- Metric, right-hand external threading (16ER3.5ISOBLU): Precisely engineered for external thread turning on metric threads, supporting a wide range of applications from straightforward to demanding with dependable performance.
This insert helps you streamline threading workflows by delivering consistent, accurate external threads across metric sizes with fewer tool changes. Its rugged geometry and broad compatibility reduce downtime, improve surface finish, and extend tool life — translating to faster cycles, lower replacement costs, and more predictable results on every job.
Part Numbers
- Protool Part Number
- 16ER3.5ISOBLU
- 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.
