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16ERB20UNBMA - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 20 |
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Description
Introducing the Carmex Thread Turning External Insert - Right Hand - 16ERB20UNBMA, a precision cutting insert designed for external threading on a wide range of materials. It supports UN thread standards (UNC, UNF, UNEF, UNS) and is optimized for right-hand threads.
These high-quality laydown triangular inserts cover the majority of thread standards in use today, delivering reliable performance from basic to demanding applications.
- Broad UN thread compatibility: Supports UNC, UNF, UNEF, and UNS thread forms, reducing the number of inserts you need and simplifying inventory.
- Right-hand threading performance: Delivers consistent thread form and clean finishes for typical production runs, helping minimize post-processing time.
- Laydown triangular geometry for durability: Multiple cutting edges provide longer tool life and stable cutting across a variety of materials and feeds.
Whether you’re fabricating fasteners, repairing components, or running mixed-thread jobs, this insert helps you finish external threads quickly and accurately. Its UN compatibility and right-hand orientation align with common shop workflows, while the durable, multi-edge layout reduces tool changes and downtime, delivering dependable results and improved throughput.
Part Numbers
- Protool Part Number
- 16ERB20UNBMA
- 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 External Inserts - BType - Unified - Right Hand
View full collection →You are viewing 16ERB20UNBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 16ERB10UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB11UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB12UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB13UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB14UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB16UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB18UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB20UNBMA Viewing | External | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB24UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB8UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 16ERB9UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £9.50 per item · pack of 10 | 5 days | Sold in packs of 10 |
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