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Carmex Carbide Tiny Tool - Threading - MIR - Metric - K20 Grade - 4.1mm Minimum Diameter x 15mm Reach
SKU:MIR4L150.8ISOK20
The Carmex Carbide Tiny Tool – Threading (MIR) is a compact, precision threading cutter designed for micro-scale parts where space is limited. Built for engineers, machinists, and hobbyists, it d...
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Specification
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| Application | Threading (MIR) |
| Thread Form | Metric |
| Pitch or Pitch Range | 0.8 |
| Minimum Diameter | 4.1 |
| Reach | 15 |
| Grade | K20 |
£23.65
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.
Learn more about Klarna
Learn more about Klarna
The Carmex Carbide Tiny Tool – Threading (MIR) is a compact, precision threading cutter designed for micro-scale parts where space is limited. Built for engineers, machinists, and hobbyists, it delivers accurate ISO threads in tight bore and small-diameter components with reliable consistency.
- Premium K20 carbide construction: Hardwearing, wear‑resistant material that extends tool life and maintains sharpness for hundreds of threading cycles, reducing downtime and replacement costs.
- Ultra-compact micro-threading design: Specifically sized for small parts, with a 4.1 mm minimum diameter and 15 mm reach to access confined areas and deliver clean, precise threads in challenging geometries.
- ISO MIR compatibility for easy integration: Aligns with standard MIR (Metric ISO) threading, ensuring broad machine compatibility and reliable results across a wide range of equipment and setups.
This tiny threading tool enables faster setups, consistent thread quality, and dependable performance in demanding micro-threading tasks. Its durable carbide core and compact geometry help you achieve precise thread profiles, minimize finishing work, and keep your workflow moving smoothly from part to part.
| Application | Threading (MIR) |
| Thread Form | Metric |
| Pitch or Pitch Range | 0.8 |
| 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 MIR4L150.8ISOK20. 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 Viewing | 0.8 | 4.1 | 15 | K20 | SIM****H4 | £23.65 | 5 days | |
| MIR4L150.5ISOK20 | 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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