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Carmex Thread Turning Internal Insert - 55 Degree Partial - Right Hand - 16IRA55BLU
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | 55 Degree Partial |
| Pitch | 0.5-1.5 (48-16) |
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The Carmex Thread Turning Internal Insert - 55 Degree Partial - Right Hand is a precision tool designed for internal threading. Its laydown triangular geometry delivers stable engagement and consistent cutting across a broad range of thread standards.
Part of an industry-leading range recognized worldwide, these inserts are built to handle everything from basic to demanding applications, making it easier to complete threaded parts with accuracy and confidence.
- Wide thread-standards compatibility: Engineered to cover the majority of thread standards in use today, reducing the need for multiple inserts and simplifying procurement.
- Triangular laydown geometry for stable cuts: The laydown triangular shape provides stable engagement and predictable cutting action, helping to achieve smooth finishes on threaded holes.
- Right-hand 55° partial geometry: Optimized for right-hand internal threads with a 55-degree profile, enabling precise, reliable thread turning on common workpieces.
This insert supports efficient, repeatable threading work by combining broad compatibility, stable cutting performance, and a geometry tailored for standard internal threads. With Carmex quality, it helps reduce tool changes, improve throughput, and deliver consistent, accurate internal threads across a wide range of applications.
Part Numbers
- Protool Part Number
- 16IRA55BLU
- 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.



