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16ER18UNBMA - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
SKU:16ER18UNBMA
Meet the Carmex Thread Turning External Insert, a versatile laydown triangular insert designed for external threading on right-hand UNC, UNF, UNEF, and UNS standards. Built to cover a wide range ...
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Material Compatibility
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Specifications at a glance
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Download Cutting Data
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 18 |
£9.50
per item · pack of 2
Prices shown ex. VAT
In Stock
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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Description
Meet the Carmex Thread Turning External Insert, a versatile laydown triangular insert designed for external threading on right-hand UNC, UNF, UNEF, and UNS standards. Built to cover a wide range of applications—from straightforward tasks to more demanding production work—this insert helps you complete threads with reliability and consistency.
- Broad UN-thread compatibility: Designed to handle UNC, UNF, UNEF, and UNS external threads in right-hand applications, reducing tool changes and simplifying your inventory management.
- Laydown triangular geometry for stable cutting: The triangular laydown design seats securely in the holder, promoting stable cutting action and consistent thread profiles across multiple passes.
- Industry-leading quality for wide-range applications: Recognized worldwide for dependable performance, this insert meets diverse threading needs from basic to more demanding tasks, helping you finish jobs with confidence.
This thread turning insert streamlines your workflow by enabling one solution for multiple thread standards, minimizing setup time and tool swaps. Its durable, proven geometry delivers reliable results across a variety of materials and threading requirements, reducing rework and downtime while delivering smooth, accurate external threads.
Part Numbers
- Protool Part Number
- 16ER18UNBMA
- 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.
Ask our technical team about this tool
Full Range: Carmex Thread Turning External Inserts - Unified - Right/Left Hand
View full collection →You are viewing 16ER18UNBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 16EL10UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL11.5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL11UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL12UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL13UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL14UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £9.50 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 16EL16UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL18UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £9.50 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 16EL20UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL24UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL27UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL28UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL32UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL36UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL40UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL44UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL48UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL56UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL64UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL72UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL8UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16EL9UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16ER10UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER11.5UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER11UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER12UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER13UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £9.50 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16ER14UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER16UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £9.50 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16ER18UNBMA Viewing | External | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER20UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER24UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER27UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER28UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER32UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £9.50 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16ER36UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER40UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER44UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £12.31 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16ER48UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER56UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER64UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER72UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER8UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16ER9UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £9.50 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 22EL5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22EL6UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22EL7UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22ER5UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22ER6UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22ER7UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £13.93 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 27EL4.5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 4.5 | 27 | BMA | £15.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27EL4UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £15.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27ER4UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £19.64 per item · pack of 2 | In Stock | Sold in packs of 2 |
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