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Carmex Carbide Tiny Tool - Threading - MIL - UN (UNC,UNF,UNEF,UNS) - BMK Grade - 5mm Minimum Diameter x 18mm Reach (Left Hand)

Carmex Carbide Tiny Tool - Threading - MIL - UN (UNC,UNF,UNEF,UNS) - BMK Grade - 5mm Minimum Diameter x 18mm Reach (Left Hand)

SKU:MIL5L1820UNBMK

The Carmex Carbide Tiny Tool for Threading is a precision cutting tool designed for small threading tasks using MIL UN thread forms (UNC, UNF, UNEF, UNS). Its full-profile UN 60° geometry deliver... Read more ↓
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ApplicationThreading (MIL)
Thread FormUN (UNC UNF UNEF UNS)
Pitch or Pitch Range20
Minimum Diameter5
Reach18
GradeBMK
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£27.98
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Carmex Carbide Tiny Tool for Threading is a precision cutting tool designed for small threading tasks using MIL UN thread forms (UNC, UNF, UNEF, UNS). Its full-profile UN 60° geometry delivers accurate, repeatable threads on tiny parts, making it ideal for engineers, machinists, and hobbyists who work with small components.

Crafted from premium BMK-grade carbide, this small-threading tool offers outstanding durability, wear resistance, and long tool life. With a 5 mm minimum diameter and an 18 mm reach, it fits into tight spaces and supports left-hand threading across a wide range of machines.

  • Full-profile UN 60° threading geometry: Delivers high-precision MIL thread forms (UNC, UNF, UNEF, UNS) on small parts with tight tolerances, reducing the need for rework.
  • BMK-grade carbide construction: Provides excellent wear resistance and long tool life, maintaining sharpness and consistency across demanding micro-threading tasks.
  • Compact 5 mm minimum diameter with 18 mm reach and left-hand capability: Enables access to confined features and supports left-hand threading on a wide range of machines, improving versatility and productivity.

This tool helps you achieve reliable, repeatable small-threading results with minimal tool wear, improving workflow, reducing downtime, and delivering smooth, accurate threads on delicate components across diverse applications.

Application Threading (MIL)
Thread Form UN (UNC UNF UNEF UNS)
Pitch or Pitch Range 20
Minimum Diameter 5
Reach 18
Grade BMK
Holder SIM****H5

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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Staff are very helpful and interested in providing a good service making us the customer feel valued.
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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.
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Full Range: Carmex Carbide Tiny Tools - Small Threading Full Profile UN 60° Tool (MIR)

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You are viewing MIL5L1820UNBMK. Click any other SKU to view its full details.

Product SKUPitch or Pitch RangeMinimum DiameterReachGradeHolderPriceStock Order
MIR3L1032UNBMK 322.710BMKSIM****H3£22.05 5 days
MIR3L1032UNBXC 322.710BXCSIM****H3£26.08 In Stock
MIR3L1532UNBMK 323.215BMKSIM****H3£27.35 In Stock
MIR3L1532UNBXC 323.215BXCSIM****H3£24.93 In Stock
MIR3L1536UNBMK 363.215BMKSIM****H3£27.35 5 days
MIR3L1536UNBXC 363.215BXCSIM****H3£24.93 In Stock
MIR4L1532UNBMK 324.115BMKSIM****H4£27.35 5 days
MIR4L1532UNBXC 324.115BXCSIM****H4£24.93 5 days
MIR4L1536UNBMK 364.115BMKSIM****H4£27.35 5 days
MIR4L1536UNBXC 364.115BXCSIM****H4£24.93 5 days
MIR5L1528UNBMK 284.915BMKSIM****H5£28.00 5 days
MIR5L1528UNBXC 284.915BXCSIM****H5£25.48 In Stock
MIR5L1820UNBMK 20518BMKSIM****H5£28.00 5 days
MIR5L1820UNBXC 20518BXCSIM****H5£25.48 In Stock
MIR6L1818UNBMK 186.218BMKSIM****H6£30.00 5 days
MIR6L1818UNBXC 186.218BXCSIM****H6£27.28 5 days
MIR6L1824UNBMK 246.518BMKSIM****H6£30.00 5 days
MIR6L1824UNBXC 246.518BXCSIM****H6£27.28 In Stock
MIR3L1032UNK20 322.710K20SIM****H3£20.95 5 days
MIR5L1528UNK20 284.915K20SIM****H5£24.20 5 days
MIR5L1820UNK20 20518K20SIM****H5£24.20 5 days
MIR6L1818UNK20 186.218K20SIM****H6£25.90 5 days
MIR3L1536UNK20 363.215K20SIM****H3£23.65 5 days
MIR4L1532UNK20 324.115K20SIM****H4£23.65 5 days
MIR6L1824UNK20 246.518K20SIM****H6£25.90 5 days
MIR3L1532UNK20 323.215K20SIM****H3£23.65 5 days
MIR4L1536UNK20 364.115K20SIM****H4£23.65 5 days
MIR5L1528UNTNX 284.915TNXSIM****H5£25.83 5 days
MIR3L1532UNTNX 323.215TNXSIM****H3£25.30 5 days
MIR5L1524UNBXC 245.115BXCSIM****H5£25.48 5 days
MIL3L1032UNBMK 322.710BMKSIM****H3£22.50 5 days
MIL3L1032UNBXC 322.710BXCSIM****H3£22.05 5 days
MIL3L1032UNK20 322.710K20SIM****H3£20.95 5 days
MIL3L1532UNBMK 323.215BMKSIM****H3£27.35 5 days
MIL3L1532UNBXC 323.215BXCSIM****H3£24.93 5 days
MIL3L1532UNK20 323.215K20SIM****H3£23.65 5 days
MIL3L1532UNTNX 323.215TNXSIM****H3£25.30 5 days
MIL3L1536UNBMK 363.215BMKSIM****H3£27.35 5 days
MIL3L1536UNBXC 363.215BXCSIM****H3£24.93 5 days
MIL3L1536UNK20 363.215K20SIM****H3£23.65 5 days
MIL4L1532UNBMK 324.115BMKSIM****H4£27.35 5 days
MIL4L1532UNBXC 324.115BXCSIM****H4£24.93 5 days
MIL4L1532UNK20 324.115K20SIM****H4£23.65 5 days
MIL4L1536UNBMK 364.115BMKSIM****H4£27.35 5 days
MIL4L1536UNBXC 364.115BXCSIM****H4£24.93 5 days
MIL4L1536UNK20 364.115K20SIM****H4£23.65 5 days
MIL5L1524UNBXC 245.115BXCSIM****H5£21.53 5 days
MIL5L1528UNBMK 284.915BMKSIM****H5£28.00 5 days
MIL5L1528UNBXC 284.915BXCSIM****H5£25.48 5 days
MIL5L1528UNK20 284.915K20SIM****H5£24.20 5 days
MIL5L1528UNTNX 284.915TNXSIM****H5£25.83 5 days
MIL5L1820UNBMK Viewing20518BMKSIM****H5£27.98 5 days
MIL5L1820UNBXC 20518BXCSIM****H5£25.40 5 days
MIL5L1820UNK20 20518K20SIM****H5£24.18 5 days
MIL6L1818UNBMK 186.218BMKSIM****H6£30.00 5 days
MIL6L1818UNBXC 186.218BXCSIM****H6£27.28 5 days
MIL6L1818UNK20 186.218K20SIM****H6£25.90 5 days
MIL6L1824UNBMK 246.518BMKSIM****H6£30.00 5 days
MIL6L1824UNBXC 246.518BXCSIM****H6£27.28 5 days
MIL6L1824UNK20 246.518K20SIM****H6£25.90 5 days

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