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Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand - 11IL27UNBMA
SKU:11IL27UNBMA
Introducing the Carmex Thread Turning Internal Insert for UN thread standards (UNC, UNF, UNEF, UNS) in a Left Hand configuration. This insert is part of our industry‑leading line of thread turnin...
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Material Compatibility
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Specifications at a glance
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Download Cutting Data
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 27 |
£8.10
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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Description
Introducing the Carmex Thread Turning Internal Insert for UN thread standards (UNC, UNF, UNEF, UNS) in a Left Hand configuration. This insert is part of our industry‑leading line of thread turning tools and is designed to deliver dependable, repeatable internal threading across a broad range of applications. It’s a versatile choice for machinists, engineers, and workshop teams working on holes that require precise internal threads.
- Broad UN compatibility: Supports UNC, UNF, UNEF, and UNS internal threads in a single insert, with left‑hand threading options for compatible setups, helping you complete more jobs without swapping tools.
- Laydown triangular geometry: Provides stable cutting action and efficient chip evacuation, promoting clean, consistent thread forms and reliable results.
- Versatile performance across applications: From straightforward to more demanding internal threading tasks, this insert covers a wide range of sizes and materials, reducing tool changes and simplifying inventory.
The Carmex Thread Turning Internal Insert helps you streamline production by delivering consistent thread quality across UN standards, supporting left‑hand applications, and reducing interruptions on the shop floor. Its durable geometry is designed to work reliably across a spectrum of threading tasks, giving you confidence in meeting specifications and finishing parts efficiently.
Part Numbers
- Protool Part Number
- 11IL27UNBMA
- 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 Internal Inserts - Unified - Right/Left Hand
View full collection →You are viewing 11IL27UNBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 06IL18UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 6 | BMA | £8.90 | 5 days | |
| 06IL18UNBXC | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 6 | BXC | £13.88 | 5 days | |
| 06IL18WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 18 | 6 | BMA | £8.90 | 5 days | |
| 06IL20UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 6 | BMA | £8.90 | In Stock | |
| 06IL20UNBXC | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 6 | BXC | £13.88 | In Stock | |
| 06IL20WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 20 | 6 | BMA | £8.90 | 5 days | |
| 06IL22WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 22 | 6 | BMA | £8.90 | 5 days | |
| 06IL24UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 6 | BMA | £13.93 | 5 days | |
| 06IL24UNBXC | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 6 | BXC | £13.88 | 5 days | |
| 06IL28UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 6 | BMA | £8.90 | 5 days | |
| 06IL28UNBXC | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 6 | BXC | £13.88 | 5 days | |
| 06IL32UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 6 | BMA | £13.93 | In Stock | |
| 06IL32UNBXC | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 6 | BXC | £13.88 | 5 days | |
| 06IR18UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 6 | BMA | £11.60 | In Stock | |
| 06IR18UNBXC | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 6 | BXC | £11.60 | In Stock | |
| 06IR20UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 6 | BMA | £11.60 | In Stock | |
| 06IR20UNBXC | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 6 | BXC | £11.60 | 5 days | |
| 06IR24UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 6 | BMA | £11.60 | 5 days | |
| 06IR28UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 6 | BMA | £11.60 | In Stock | |
| 06IR32UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 6 | BMA | £11.60 | In Stock | |
| 08IL14UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 14 | 8 | BMA | £13.88 | 5 days | |
| 08IL16UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 16 | 8 | BMA | £8.90 | 5 days | |
| 08IL18UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 8 | BMA | £13.88 | 5 days | |
| 08IL20UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 8 | BMA | £13.88 | 5 days | |
| 08IL24UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 8 | BMA | £13.88 | 5 days | |
| 08IL28UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 8 | BMA | £13.88 | 5 days | |
| 08IL32UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 8 | BMA | £13.88 | 5 days | |
| 08IR13UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 8 | BMA | £11.60 | In Stock | |
| 08IR14UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 8 | BMA | £11.60 | In Stock | |
| 08IR16UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 8 | BMA | £11.60 | 5 days | |
| 08IR18UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 8 | BMA | £11.60 | In Stock | |
| 08IR20UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 8 | BMA | £11.60 | In Stock | |
| 08IR24UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 8 | BMA | £11.60 | 5 days | |
| 08IR28UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 8 | BMA | £11.60 | 5 days | |
| 08IR32UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 8 | BMA | £11.60 | 5 days | |
| 11IL11UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 11 | 11 | BMA | £8.10 | 5 days | |
| 11IL12UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 12 | 11 | BMA | £8.10 | 5 days | |
| 11IL13UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 13 | 11 | BMA | £10.55 | 5 days | |
| 11IL14UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 14 | 11 | BMA | £8.10 | 5 days | |
| 11IL16UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 16 | 11 | BMA | £10.55 | In Stock | |
| 11IL18UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 11 | BMA | £10.55 | In Stock | |
| 11IL20UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 11 | BMA | £8.10 | 5 days | |
| 11IL24UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 11 | BMA | £8.10 | In Stock | |
| 11IL27UNBMA Viewing | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 27 | 11 | BMA | £8.10 | 5 days | |
| 11IL28UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 11 | BMA | £10.55 | 5 days | |
| 11IL32UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 11 | BMA | £8.10 | 5 days | |
| 11IL36UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 36 | 11 | BMA | £10.53 | 5 days | |
| 11IL40UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 40 | 11 | BMA | £10.53 | 5 days | |
| 11IL44UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 44 | 11 | BMA | £10.53 | 5 days | |
| 11IL48UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 48 | 11 | BMA | £10.53 | 5 days | |
| 11IL56UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 56 | 11 | BMA | £10.53 | 5 days | |
| 11IL64UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 64 | 11 | BMA | £10.53 | 5 days | |
| 11IL72UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 72 | 11 | BMA | £10.53 | 5 days | |
| 11IR11UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 11 | 11 | BMA | £10.55 | 5 days | |
| 11IR12UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 11 | BMA | £10.55 | In Stock | |
| 11IR13UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 11 | BMA | £10.55 | In Stock | |
| 11IR14UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 11 | BMA | £10.55 | 5 days | |
| 11IR16UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 11 | BMA | £10.55 | In Stock | |
| 11IR18UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 11 | BMA | £10.55 | In Stock | |
| 11IR20UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 11 | BMA | £10.55 | 5 days | |
| 11IR24UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 11 | BMA | £10.55 | In Stock | |
| 11IR27UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 27 | 11 | BMA | £10.55 | In Stock | |
| 11IR28UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 11 | BMA | £10.55 | In Stock | |
| 11IR32UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 11 | BMA | £10.55 | In Stock | |
| 11IR36UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 36 | 11 | BMA | £13.68 | In Stock | |
| 11IR40UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 40 | 11 | BMA | £10.55 | In Stock | |
| 11IR44UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 44 | 11 | BMA | £10.53 | 5 days | |
| 11IR48UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 48 | 11 | BMA | £13.68 | 5 days | |
| 11IR56UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 56 | 11 | BMA | £10.53 | 5 days | |
| 11IR64UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 64 | 11 | BMA | £10.53 | 5 days | |
| 11IR72UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 72 | 11 | BMA | £10.53 | 5 days | |
| 16IL10UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £9.50 | 5 days | |
| 16IL11.5UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £7.29 | 5 days | |
| 16IL11UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £9.50 | 5 days | |
| 16IL12UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £9.50 | 5 days | |
| 16IL13UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £9.50 | 5 days | |
| 16IL14UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £9.50 | 5 days | |
| 16IL16UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £9.50 | 5 days | |
| 16IL18UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £9.50 | 5 days | |
| 16IL20UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £9.50 | 5 days | |
| 16IL24UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £7.29 | In Stock | |
| 16IL27UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £7.29 | 5 days | |
| 16IL28UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £7.29 | 5 days | |
| 16IL32UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £7.29 | 5 days | |
| 16IL36UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £9.47 | 5 days | |
| 16IL40UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £9.47 | 5 days | |
| 16IL44UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £9.47 | 5 days | |
| 16IL48UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £9.47 | 5 days | |
| 16IL56UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £9.47 | 5 days | |
| 16IL64UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £9.47 | 5 days | |
| 16IL72UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £9.47 | 5 days | |
| 16IL8UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £9.50 | In Stock | |
| 16IL9UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £9.50 | 5 days | |
| 16IR10UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 10 | 16 | BMA | £9.50 | In Stock | |
| 16IR11.5UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 11.5 | 16 | BMA | £9.50 | In Stock | |
| 16IR11UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 11 | 16 | BMA | £9.50 | In Stock | |
| 16IR12UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £9.50 | In Stock | |
| 16IR13UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 13 | 16 | BMA | £9.50 | In Stock | |
| 16IR14UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £9.50 | In Stock | |
| 16IR16UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £9.50 | 5 days | |
| 16IR18UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £9.50 | In Stock | |
| 16IR20UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £9.50 | In Stock | |
| 16IR24UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 24 | 16 | BMA | £9.50 | In Stock | |
| 16IR27UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 27 | 16 | BMA | £9.50 | In Stock | |
| 16IR28UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 28 | 16 | BMA | £9.50 | In Stock | |
| 16IR32UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 32 | 16 | BMA | £9.50 | In Stock | |
| 16IR36UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 36 | 16 | BMA | £12.31 | In Stock | |
| 16IR40UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 40 | 16 | BMA | £12.31 | In Stock | |
| 16IR44UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 44 | 16 | BMA | £12.31 | 5 days | |
| 16IR48UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 48 | 16 | BMA | £12.31 | 5 days | |
| 16IR56UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 56 | 16 | BMA | £12.31 | 5 days | |
| 16IR64UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 64 | 16 | BMA | £12.31 | 5 days | |
| 16IR72UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 72 | 16 | BMA | £12.31 | 5 days | |
| 16IR8UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 8 | 16 | BMA | £9.50 | In Stock | |
| 16IR9UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 9 | 16 | BMA | £9.50 | In Stock | |
| 22IL5UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £10.69 | 5 days | |
| 22IL6UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £10.69 | 5 days | |
| 22IL7UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £10.69 | 5 days | |
| 22IR5UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 5 | 22 | BMA | £13.93 | 5 days | |
| 22IR6UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 6 | 22 | BMA | £13.93 | In Stock | |
| 22IR7UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 7 | 22 | BMA | £13.93 | In Stock | |
| 27IL4.5UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 4.5 | 27 | BMA | £15.10 | 5 days | |
| 27IL4UNBMA | Internal | Left Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £15.10 | 5 days | |
| 27IR4.5UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 4.5 | 27 | BMA | £19.64 | 5 days | |
| 27IR4UNBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 4 | 27 | BMA | £19.64 | 5 days |
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