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Carmex Carbide Tiny Tool - Threading - MIL - Metric - K20 Grade - 6.1mm Minimum Diameter x 22mm Reach (Left Hand)

Carmex Carbide Tiny Tool - Threading - MIL - Metric - K20 Grade - 6.1mm Minimum Diameter x 22mm Reach (Left Hand)

SKU:MIL6L221.25ISOK20

The Carmex Carbide Tiny Tool is a compact, high-precision threading tool designed for small-diameter parts. Crafted from premium K20-grade carbide, it delivers exceptional hardness, wear resistan... Read more ↓
M
K
N
S
ApplicationThreading (MIL)
Thread FormMetric
Pitch or Pitch Range1.25
Minimum Diameter6.1
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£25.90
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
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Carbide Tiny Tool is a compact, high-precision threading tool designed for small-diameter parts. Crafted from premium K20-grade carbide, it delivers exceptional hardness, wear resistance, and consistent thread forms in tight spaces. Optimized for left-hand threading, it features a 6.1 mm minimum diameter and a 22 mm reach to access constrained features on small components, while adhering to MIL-grade durability for demanding environments.

Whether you’re an engineer, machinist, or hobbyist, this ISO-threading tool offers reliable performance across a wide range of machines and materials, helping you achieve reproducible results with minimal setup.

  • Premium K20-grade carbide: High-hardness carbide provides exceptional wear resistance and edge retention for consistent thread accuracy on small-diameter parts, reducing tool swaps and rework.
  • ISO threading, MIL-grade reliability: Engineered to deliver accurate ISO threads across a range of machines while withstanding demanding environments, giving you dependable results every time.
  • Compact left-hand threading with 6.1 mm min dia and 22 mm reach: Designed to access tight internal features and restricted threads, improving access and throughput on small components without compromising strength.

The result is a dependable, precise threading solution that helps you complete small-diameter threads faster, with fewer interruptions. The premium carbide stands up to daily use, extending tool life and reducing maintenance downtime. With its left-hand threading capability and broad machine compatibility, you can tackle a wider range of projects without swapping tools, delivering consistent results project after project.

Part Numbers

Protool Part Number
MIL6L221.25ISOK20
Brand
Carmex
Category
Tiny Tool Inserts
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

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Carmex Carbide Tiny Tools - Small Threading ISO Tool (MIR)

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You are viewing MIL6L221.25ISOK20. Click any other SKU to view its full details.

Product SKUPitch or Pitch RangeMinimum DiameterReachGradeHolderPriceStock Order
MIR3L100.5ISOBMK 0.52.410BMKSIM****H3£28.70 5 days
MIR3L100.5ISOBXC 0.52.410BXCSIM****H3£26.08 5 days
MIR3L150.5ISOBMK 0.53.215BMKSIM****H3£27.35 In Stock
MIR3L150.5ISOBXC 0.53.215BXCSIM****H3£24.93 5 days
MIR3L150.75ISOBMK 0.753.215BMKSIM****H3£27.35 5 days
MIR3L150.75ISOBXC 0.753.215BXCSIM****H3£24.93 5 days
MIR3L150.7ISOBMK 0.73.215BMKSIM****H3£27.35 5 days
MIR3L150.7ISOBXC 0.73.215BXCSIM****H3£24.93 In Stock
MIR4L150.5ISOBMK 0.54.115BMKSIM****H4£27.35 In Stock
MIR4L150.5ISOBXC 0.54.115BXCSIM****H4£24.93 5 days
MIR4L150.75ISOBMK 0.754.115BMKSIM****H4£27.35 5 days
MIR4L150.75ISOBXC 0.754.115BXCSIM****H4£24.93 In Stock
MIR4L150.8ISOBMK 0.84.115BMKSIM****H4£27.35 In Stock
MIR4L150.8ISOBXC 0.84.115BXCSIM****H4£24.93 In Stock
MIR5L151.0ISOBMK 14.915BMKSIM****H5£28.00 In Stock
MIR5L151.0ISOBXC 14.915BXCSIM****H5£25.48 In Stock
MIR6L221.25ISOBMK 1.256.122BMKSIM****H6£30.00 5 days
MIR6L221.25ISOBXC 1.256.122BXCSIM****H6£27.28 5 days
MIR6L221.5ISOBMK 1.56.122BMKSIM****H6£30.00 5 days
MIR6L221.5ISOBXC 1.56.122BXCSIM****H6£27.28 5 days
MIR5L151.0ISOK20 14.915K20SIM****H5£24.20 5 days
MIR3L150.75ISOK20 0.753.215K20SIM****H3£23.65 5 days
MIR3L150.7ISOK20 0.73.215K20SIM****H3£23.65 5 days
MIR3L150.5ISOK20 0.53.215K20SIM****H3£23.65 5 days
MIR3L100.5ISOK20 0.52.410K20SIM****H3£20.95 5 days
MIR6L221.25ISOK20 1.256.122K20SIM****H6£25.90 5 days
MIR4L150.8ISOK20 0.84.115K20SIM****H4£23.65 5 days
MIR4L150.5ISOK20 0.54.115K20SIM****H4£23.65 5 days
MIR6L221.5ISOK20 1.56.122K20SIM****H6£25.90 5 days
MIR4L150.75ISOK20 0.754.115K20SIM****H4£23.65 5 days
MIR5L151.0ISOTNX 14.915TNXSIM****H5£25.83 5 days
MIR6L221.25ISOTNX 1.256.122TNXSIM****H6£27.65 5 days
MIR4L150.5ISOTNX 0.54.115TNXSIM****H4£25.30 5 days
MIR4L150.75ISOTNX 0.754.115TNXSIM****H4£25.30 5 days
MIL3L100.5ISOBMK 0.52.410BMKSIM****H3£28.70 5 days
MIL3L100.5ISOBXC 0.52.410BXCSIM****H3£22.05 5 days
MIL3L100.5ISOK20 0.52.410K20SIM****H3£20.95 5 days
MIL3L150.5ISOBMK 0.53.215BMKSIM****H3£27.35 5 days
MIL3L150.5ISOBXC 0.53.215BXCSIM****H3£24.93 5 days
MIL3L150.5ISOK20 0.53.215K20SIM****H3£23.65 5 days
MIL3L150.75ISOBMK 0.753.215BMKSIM****H3£27.35 5 days
MIL3L150.75ISOBXC 0.753.215BXCSIM****H3£24.93 5 days
MIL3L150.75ISOK20 0.753.215K20SIM****H3£23.65 5 days
MIL3L150.7ISOBMK 0.73.215BMKSIM****H3£27.35 5 days
MIL3L150.7ISOBXC 0.73.215BXCSIM****H3£24.93 5 days
MIL3L150.7ISOK20 0.73.215K20SIM****H3£23.65 5 days
MIL4L150.5ISOBMK 0.54.115BMKSIM****H4£27.35 5 days
MIL4L150.5ISOBXC 0.54.115BXCSIM****H4£24.93 5 days
MIL4L150.5ISOK20 0.54.115K20SIM****H4£23.65 5 days
MIL4L150.5ISOTNX 0.54.115TNXSIM****H4£25.30 5 days
MIL4L150.75ISOBMK 0.754.115BMKSIM****H4£27.35 5 days
MIL4L150.75ISOBXC 0.754.115BXCSIM****H4£24.93 5 days
MIL4L150.75ISOK20 0.754.115K20SIM****H4£23.65 5 days
MIL4L150.75ISOTNX 0.754.115TNXSIM****H4£25.30 5 days
MIL4L150.8ISOBMK 0.84.115BMKSIM****H4£27.35 5 days
MIL4L150.8ISOBXC 0.84.115BXCSIM****H4£24.93 In Stock
MIL4L150.8ISOK20 0.84.115K20SIM****H4£23.65 5 days
MIL5L151.0ISOBMK 14.915BMKSIM****H5£28.00 5 days
MIL5L151.0ISOBXC 14.915BXCSIM****H5£25.48 In Stock
MIL5L151.0ISOK20 14.915K20SIM****H5£24.20 5 days
MIL5L151.0ISOTNX 14.915TNXSIM****H5£25.83 5 days
MIL6L221.25ISOBMK 1.256.122BMKSIM****H6£30.00 5 days
MIL6L221.25ISOBXC 1.256.122BXCSIM****H6£27.28 5 days
MIL6L221.25ISOK20 Viewing1.256.122K20SIM****H6£25.90 5 days
MIL6L221.25ISOTNX 1.256.122TNXSIM****H6£27.68 5 days
MIL6L221.5ISOBMK 1.56.122BMKSIM****H6£25.35 5 days
MIL6L221.5ISOBXC 1.56.122BXCSIM****H6£27.28 5 days
MIL6L221.5ISOK20 1.56.122K20SIM****H6£21.90 5 days

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