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Carmex Thread Turning External Insert - MJ - Right Hand - 11ER1.25MJBMA
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | MJ |
| Pitch | 1.25 |
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Carmex Thread Turning External Insert – MJ, Right Hand – 11ER1.25MJBMA is part of our industry-leading range of thread turning inserts. These laydown triangular inserts are designed to provide a solution for the majority of thread standards in use today, delivering reliable performance across a wide range of applications.
Ideal for engineers, machinists, and workshop technicians who need consistent external threading results—from simple to demanding jobs. This right-hand variant is optimized for external turning, helping you achieve smooth cuts and reliable thread form.
- Broad thread standards compatibility: Fits the majority of thread standards, reducing tool changes and making it easier to complete diverse threading tasks with a single insert.
- Durable laydown triangular geometry: The laydown triangular design distributes cutting forces for steady wear and longer tool life, delivering consistent thread quality over more cycles.
- Right-hand orientation for external turning: Specifically designed for right-hand threads, this insert provides stable chip flow and predictable performance in external turning operations.
This insert is built to support reliable, repeatable results across a broad range of materials and thread standards. By choosing Carmex, you’re choosing a tool that helps streamline setups, maintain consistent thread tolerances, and keep production moving with confidence.
Part Numbers
- Protool Part Number
- 11ER1.25MJBMA
- 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.



