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Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand - 16EL72UNBMA
SKU:16EL72UNBMA
The Carmex Thread Turning External Insert is a versatile solution for external thread turning across UN standards—UNC, UNF, UNEF, and UNS. This left‑hand variant is designed for efficient left‑ha...
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Material Compatibility
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Specification
Download Cutting Data
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 72 |
| Insert Size | 16 |
| Grade | BMA |
£11.16
Prices shown ex. VAT
5 days estimated lead time
— subject to availability
View Other Sizes →
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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Learn more about Klarna
The Carmex Thread Turning External Insert is a versatile solution for external thread turning across UN standards—UNC, UNF, UNEF, and UNS. This left‑hand variant is designed for efficient left‑hand threading, delivering consistent cuts and clean thread forms.
- Wide UN thread compatibility: Covers UNC, UNF, UNEF, and UNS external threads, reducing tool changes and expanding your options across common threading tasks.
- Left-hand threading optimized: Specifically engineered for left‑hand threads, ensuring the correct cutting direction and dependable, repeatable results.
- Triangular laydown geometry for stability: Laydown triangular inserts provide stable chip control and smooth cutting, helping achieve consistent thread profiles and longer tool life.
Whether you’re building fittings, fasteners, or precision components, this insert supports efficient workflows, minimizes downtime, and delivers reliable performance across a wide range of thread requirements.
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 72 |
| Insert Size | 16 |
| Grade | BMA |
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.
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Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Full Range: Carmex Thread Turning External Inserts - Unified - Right/Left Hand
View full collection →You are viewing 16EL72UNBMA. 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 | £8.44 | 5 days | |
| 16EL11.5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £8.59 | 5 days | |
| 16EL11UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £8.44 | 5 days | |
| 16EL12UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £8.44 | 5 days | |
| 16EL13UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £8.44 | 5 days | |
| 16EL14UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £8.44 | In Stock | |
| 16EL16UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £8.44 | 5 days | |
| 16EL18UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £8.44 | In Stock | |
| 16EL20UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £8.44 | 5 days | |
| 16EL24UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £8.44 | 5 days | |
| 16EL27UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £8.59 | 5 days | |
| 16EL28UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £8.44 | 5 days | |
| 16EL32UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £8.44 | 5 days | |
| 16EL36UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £11.16 | 5 days | |
| 16EL40UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £11.16 | 5 days | |
| 16EL44UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £11.16 | 5 days | |
| 16EL48UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £11.16 | 5 days | |
| 16EL56UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £11.16 | 5 days | |
| 16EL64UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £11.16 | 5 days | |
| 16EL72UNBMA Viewing | External | Left Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £11.16 | 5 days | |
| 16EL8UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £8.44 | 5 days | |
| 16EL9UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £8.44 | 5 days | |
| 16ER10UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £8.44 | In Stock | |
| 16ER11.5UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £8.44 | In Stock | |
| 16ER11UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £8.44 | In Stock | |
| 16ER12UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £8.44 | In Stock | |
| 16ER13UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £8.44 | 5 days | |
| 16ER14UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £8.44 | 5 days | |
| 16ER16UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £8.44 | 5 days | |
| 16ER18UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £8.44 | In Stock | |
| 16ER20UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £8.44 | In Stock | |
| 16ER24UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £8.44 | In Stock | |
| 16ER27UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £8.44 | 5 days | |
| 16ER28UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £8.44 | In Stock | |
| 16ER32UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £8.44 | 5 days | |
| 16ER36UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £10.94 | In Stock | |
| 16ER40UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £10.94 | In Stock | |
| 16ER44UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £10.94 | 5 days | |
| 16ER48UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £10.94 | In Stock | |
| 16ER56UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £10.94 | In Stock | |
| 16ER64UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £10.94 | In Stock | |
| 16ER72UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £10.94 | In Stock | |
| 16ER8UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £8.44 | In Stock | |
| 16ER9UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £8.44 | 5 days | |
| 22EL5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £12.59 | 5 days | |
| 22EL6UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £12.59 | 5 days | |
| 22EL7UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £12.59 | 5 days | |
| 22ER5UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £12.38 | In Stock | |
| 22ER6UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £12.38 | In Stock | |
| 22ER7UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £12.38 | In Stock | |
| 27EL4.5UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 4.5 | 27 | BMA | £17.79 | 5 days | |
| 27EL4UNBMA | External | Left Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £17.79 | 5 days | |
| 27ER4UNBMA | External | Right Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £17.46 | In Stock |
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