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Carmex Thread Turning External Insert - API 403 - Right Hand - 22ER5API403BMA
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | API 403 |
| Pitch | 5 |
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The ones our customers buy most.Description
Our industry-leading range of thread turning inserts is recognized worldwide. The Carmex Thread Turning External Insert (API 403, Right Hand) is a high-quality laydown triangular insert designed for external threading tasks and compatibility with a wide range of thread standards in use today. It’s a versatile choice for machining shops, manufacturers, and maintenance teams.
Built for reliability, the 22ER5API403BMA insert delivers consistent performance from basic threading jobs to the most demanding applications. Its precise geometry and craftsmanship aim to provide clean thread profiles, stable cutting action, and long tool life.
- Versatile thread standard compatibility: Covers the majority of thread standards in use today, reducing the need to stock multiple inserts and speeding setup.
- Laydown triangular design for stability and finish: Robust geometry delivers improved rigidity, smoother cutting action, and cleaner thread profiles with longer edge life.
- Reliable performance from basic to demanding applications: Designed to perform consistently across a wide range of materials and threading tasks, minimizing downtime and rework.
By choosing this insert, you gain a dependable, single solution that simplifies tooling, speeds up setups, and delivers accurate, repeatable threads across parts and materials. Its durable carbide geometry provides long tool life, while broad compatibility reduces tool changes and inventory complexity, boosting overall productivity and shop efficiency.
Part Numbers
- Protool Part Number
- 22ER5API403BMA
- 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.



