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16EL32UNJBMA - Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 32 |
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The Carmex Thread Turning External Insert is designed for external threading on UNJ sizes, including UNJC, UNJF, UNJEF, and UNJS. Part code 16EL32UNJBMA. Built for engineers, machinists, and hobbyists alike, it delivers precise, consistent thread profiles with every pass.
An industry-leading component in a compact form, this left-hand insert features a laydown triangular geometry that provides broad compatibility across common UNJ thread standards and a wide range of materials, from basic to demanding tasks.
- Broad UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS external thread standards, enabling you to tackle multiple threading tasks with a single insert family and reducing setup time and tool changes.
- Left-Hand external threading orientation: Engineered for left-hand thread turns, delivering precise engagement, stable chip flow, and clean thread profiles across a range of materials.
- Durable triangular laydown design: Rugged carbide insert with laydown geometry for long tool life and reliable performance in both basic and demanding applications, lowering downtime and rework.
This insert helps you streamline threading workflows, delivering consistent thread quality, reduced downtime, and more predictable results across a variety of UNJ sizes. With its broad compatibility and durable construction, you can complete more jobs with fewer tool changes and less fuss, helping your operation stay on schedule and meet tight tolerances.
Part Numbers
- Protool Part Number
- 16EL32UNJBMA
- 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.










