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Carmex Carbide Tiny Tool - Threading - MIR - Metric - K20 Grade - 4.1mm Minimum Diameter x 15mm Reach
SKU:MIR4L150.5ISOK20
The Carmex Carbide Tiny Tool - Small Threading ISO Tool (MIR) is a compact, high-precision threading solution designed for small-diameter parts. Made from premium K20-grade carbide, it delivers d...
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| Application | Threading (MIR) |
| Thread Form | Metric |
| Pitch or Pitch Range | 0.5 |
| Minimum Diameter | 4.1 |
| Reach | 15 |
| Grade | K20 |
£23.65
Prices shown ex. VAT
5 days estimated lead time
— subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Learn more about Klarna
The Carmex Carbide Tiny Tool - Small Threading ISO Tool (MIR) is a compact, high-precision threading solution designed for small-diameter parts. Made from premium K20-grade carbide, it delivers durable cutting performance, excellent wear resistance, and reliable ISO threading compatibility across MIR systems, making it ideal for engineers, machinists, and hobbyists who demand accuracy in tight spaces.
- Premium carbide for long tool life: High-hardness K20 carbide resists wear and keeps a sharp edge, minimizing tool changes and delivering consistent thread quality over many cycles.
- ISO MIR threading compatibility: Built to meet ISO MIR threading standards, ensuring reliable, repeatable results with a wide range of machines and setups.
- Compact size with 4.1 mm minimum diameter and 15 mm reach: The small diameter and extended reach let you access tight bores and small components while maintaining precise thread engagement.
With its combination of hard-wearing carbide, standard ISO/MIR compatibility, and a compact form, this tool helps you complete micro-threading tasks faster and more reliably. You can expect precise starts, cleaner thread profiles, reduced rework, and improved workflow when working on small parts, making it a dependable addition to any precision machining or repair kit.
| Application | Threading (MIR) |
| Thread Form | Metric |
| Pitch or Pitch Range | 0.5 |
| Minimum Diameter | 4.1 |
| Reach | 15 |
| Grade | K20 |
| Holder | SIM****H4 |
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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honest about stock and prices are competitive.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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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 Carbide Tiny Tools - Small Threading ISO Tool (MIR)
View full collection →You are viewing MIR4L150.5ISOK20. Click any other SKU to view its full details.
| Product SKU | Pitch or Pitch Range | Minimum Diameter | Reach | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MIR3L100.5ISOBMK | 0.5 | 2.4 | 10 | BMK | SIM****H3 | £28.70 | 5 days | |
| MIR3L100.5ISOBXC | 0.5 | 2.4 | 10 | BXC | SIM****H3 | £26.08 | 5 days | |
| MIR3L150.5ISOBMK | 0.5 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | In Stock | |
| MIR3L150.5ISOBXC | 0.5 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | In Stock | |
| MIR3L150.75ISOBMK | 0.75 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | 5 days | |
| MIR3L150.75ISOBXC | 0.75 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | 5 days | |
| MIR3L150.7ISOBMK | 0.7 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | 5 days | |
| MIR3L150.7ISOBXC | 0.7 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | In Stock | |
| MIR4L150.5ISOBMK | 0.5 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | In Stock | |
| MIR4L150.5ISOBXC | 0.5 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | In Stock | |
| MIR4L150.75ISOBMK | 0.75 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | 5 days | |
| MIR4L150.75ISOBXC | 0.75 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | In Stock | |
| MIR4L150.8ISOBMK | 0.8 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | In Stock | |
| MIR4L150.8ISOBXC | 0.8 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | In Stock | |
| MIR5L151.0ISOBMK | 1 | 4.9 | 15 | BMK | SIM****H5 | £28.00 | In Stock | |
| MIR5L151.0ISOBXC | 1 | 4.9 | 15 | BXC | SIM****H5 | £25.48 | In Stock | |
| MIR6L221.25ISOBMK | 1.25 | 6.1 | 22 | BMK | SIM****H6 | £30.00 | 5 days | |
| MIR6L221.25ISOBXC | 1.25 | 6.1 | 22 | BXC | SIM****H6 | £27.28 | 5 days | |
| MIR6L221.5ISOBMK | 1.5 | 6.1 | 22 | BMK | SIM****H6 | £30.00 | 5 days | |
| MIR6L221.5ISOBXC | 1.5 | 6.1 | 22 | BXC | SIM****H6 | £27.28 | 5 days | |
| MIR5L151.0ISOK20 | 1 | 4.9 | 15 | K20 | SIM****H5 | £24.20 | 5 days | |
| MIR3L150.75ISOK20 | 0.75 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIR3L150.7ISOK20 | 0.7 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIR3L150.5ISOK20 | 0.5 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIR3L100.5ISOK20 | 0.5 | 2.4 | 10 | K20 | SIM****H3 | £20.95 | 5 days | |
| MIR6L221.25ISOK20 | 1.25 | 6.1 | 22 | K20 | SIM****H6 | £25.90 | 5 days | |
| MIR4L150.8ISOK20 | 0.8 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIR4L150.5ISOK20 Viewing | 0.5 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIR6L221.5ISOK20 | 1.5 | 6.1 | 22 | K20 | SIM****H6 | £25.90 | 5 days | |
| MIR4L150.75ISOK20 | 0.75 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIR5L151.0ISOTNX | 1 | 4.9 | 15 | TNX | SIM****H5 | £25.83 | 5 days | |
| MIR6L221.25ISOTNX | 1.25 | 6.1 | 22 | TNX | SIM****H6 | £27.65 | 5 days | |
| MIR4L150.5ISOTNX | 0.5 | 4.1 | 15 | TNX | SIM****H4 | £25.30 | 5 days | |
| MIR4L150.75ISOTNX | 0.75 | 4.1 | 15 | TNX | SIM****H4 | £25.30 | 5 days | |
| MIL3L100.5ISOBMK | 0.5 | 2.4 | 10 | BMK | SIM****H3 | £28.70 | 5 days | |
| MIL3L100.5ISOBXC | 0.5 | 2.4 | 10 | BXC | SIM****H3 | £22.05 | 5 days | |
| MIL3L100.5ISOK20 | 0.5 | 2.4 | 10 | K20 | SIM****H3 | £20.95 | 5 days | |
| MIL3L150.5ISOBMK | 0.5 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | 5 days | |
| MIL3L150.5ISOBXC | 0.5 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | 5 days | |
| MIL3L150.5ISOK20 | 0.5 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIL3L150.75ISOBMK | 0.75 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | 5 days | |
| MIL3L150.75ISOBXC | 0.75 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | 5 days | |
| MIL3L150.75ISOK20 | 0.75 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIL3L150.7ISOBMK | 0.7 | 3.2 | 15 | BMK | SIM****H3 | £27.35 | 5 days | |
| MIL3L150.7ISOBXC | 0.7 | 3.2 | 15 | BXC | SIM****H3 | £24.93 | 5 days | |
| MIL3L150.7ISOK20 | 0.7 | 3.2 | 15 | K20 | SIM****H3 | £23.65 | 5 days | |
| MIL4L150.5ISOBMK | 0.5 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | 5 days | |
| MIL4L150.5ISOBXC | 0.5 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | 5 days | |
| MIL4L150.5ISOK20 | 0.5 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIL4L150.5ISOTNX | 0.5 | 4.1 | 15 | TNX | SIM****H4 | £25.30 | 5 days | |
| MIL4L150.75ISOBMK | 0.75 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | 5 days | |
| MIL4L150.75ISOBXC | 0.75 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | 5 days | |
| MIL4L150.75ISOK20 | 0.75 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIL4L150.75ISOTNX | 0.75 | 4.1 | 15 | TNX | SIM****H4 | £25.30 | 5 days | |
| MIL4L150.8ISOBMK | 0.8 | 4.1 | 15 | BMK | SIM****H4 | £27.35 | 5 days | |
| MIL4L150.8ISOBXC | 0.8 | 4.1 | 15 | BXC | SIM****H4 | £24.93 | In Stock | |
| MIL4L150.8ISOK20 | 0.8 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIL5L151.0ISOBMK | 1 | 4.9 | 15 | BMK | SIM****H5 | £28.00 | 5 days | |
| MIL5L151.0ISOBXC | 1 | 4.9 | 15 | BXC | SIM****H5 | £25.48 | In Stock | |
| MIL5L151.0ISOK20 | 1 | 4.9 | 15 | K20 | SIM****H5 | £24.20 | 5 days | |
| MIL5L151.0ISOTNX | 1 | 4.9 | 15 | TNX | SIM****H5 | £25.83 | 5 days | |
| MIL6L221.25ISOBMK | 1.25 | 6.1 | 22 | BMK | SIM****H6 | £30.00 | 5 days | |
| MIL6L221.25ISOBXC | 1.25 | 6.1 | 22 | BXC | SIM****H6 | £27.28 | 5 days | |
| MIL6L221.25ISOK20 | 1.25 | 6.1 | 22 | K20 | SIM****H6 | £25.90 | 5 days | |
| MIL6L221.25ISOTNX | 1.25 | 6.1 | 22 | TNX | SIM****H6 | £27.68 | 5 days | |
| MIL6L221.5ISOBMK | 1.5 | 6.1 | 22 | BMK | SIM****H6 | £25.35 | 5 days | |
| MIL6L221.5ISOBXC | 1.5 | 6.1 | 22 | BXC | SIM****H6 | £27.28 | 5 days | |
| MIL6L221.5ISOK20 | 1.5 | 6.1 | 22 | K20 | SIM****H6 | £21.90 | 5 days |
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