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11IRB20UNJBMA - Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 20 |
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Description
The Carmex Thread Turning Internal Insert is a precision cutting solution designed specifically for internal threading in UNJ configurations. Right-hand threading is supported, making it ideal for engineers, machinists, and job shops that require reliable, consistent internal threads across a range of materials and applications. Built to deliver clean, accurate threads with minimal setup, this insert is a practical choice for both production runs and on-demand work.
- Wide UNJ compatibility: Versatile support for UNJC, UNJF, UNJEF, and UNJS internal threads, reducing the need for multiple inserts and simplifying tool crib inventory.
- Laydown triangular geometry: The flat-cut, laydown design promotes stable cutting engagement and efficient chip control, delivering smooth thread surfaces and consistent tolerances.
- Right-hand, durable construction: Engineered for demanding applications with robust geometry and wear resistance, helping extend tool life and minimize downtime.
This insert helps you streamline threading tasks, improve thread quality, and maintain production momentum by enabling reliable performance across multiple UNJ standards with a single, easy-to-integrate solution.
Part Numbers
- Protool Part Number
- 11IRB20UNJBMA
- 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.
Full Range: Carmex Thread Turning Internal Inserts - BType - UNJ - Right Hand
View full collection →You are viewing 11IRB20UNJBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 11IRB16UNJBMA | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 16 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 11IRB18UNJBMA | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 18 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 11IRB20UNJBMA Viewing | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 20 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 11IRB24UNJBMA | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 24 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 11IRB28UNJBMA | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 28 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 11IRB32UNJBMA | Internal | Right Hand | UNJ (UNJC UNJF UNJEF UNJS) | 32 | 11 | BMA | £10.28 per item · pack of 10 | 5 days | Sold in packs of 10 |
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