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Carmex Carbide Tiny Tool - Threading - MIR - 55° Partial - K20 Grade - 4.1mm Minimum Diameter x 15mm Reach

Carmex Carbide Tiny Tool - Threading - MIR - 55° Partial - K20 Grade - 4.1mm Minimum Diameter x 15mm Reach

SKU:MIR4L15A55K20

The Carmex Carbide Tiny Tool - Threading - MIR - 55° Partial - K20 Grade is a compact, high-precision threading bar designed for tight spaces and small bores. With a 55° partial-thread profile an... Read more ↓
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ApplicationThreading (MIR)
Thread Form55° Partial
Pitch or Pitch Range(0.5-1.0mm) (48-24 TPI)
Minimum Diameter4.1
Reach15
GradeK20
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£23.65
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5 days estimated lead time — subject to availability
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The Carmex Carbide Tiny Tool - Threading - MIR - 55° Partial - K20 Grade is a compact, high-precision threading bar designed for tight spaces and small bores. With a 55° partial-thread profile and a 4.1 mm minimum diameter paired with a 15 mm reach, it helps you create accurate internal threads in constrained assemblies without bulky tooling.

This versatile tool line is built to perform across a wide range of materials, including stainless steels. It offers two coating options to optimize cutting performance: the BXC TiN-coated grade for low cutting speeds and dependable threading, and the BMK sub-micron grade with advanced triple PVD coating for exceptional heat resistance and smooth cutting across general-purpose applications. Together, these features deliver reliable results in demanding shop environments.

  • 55° partial-threading profile for compact work: Enables precise internal threading in small bores and tight spaces, with a practical 4.1 mm minimum diameter and 15 mm reach for accessible installations.
  • Dual coating options for versatile performance: Choose BXC TiN for steady cuts at lower speeds on stainless steels, or BMK with a triple PVD coating for superior heat resistance and smooth operation across a broad material range.
  • Small-diameter, long-reach carbide design: Designed for tight bore access (minimum bore diameter 1.2 mm) and extended reach (15 mm), delivering durable, repeatable cuts in constrained geometries.

This tool helps you complete precision threading in limited spaces with confidence, improves workflow efficiency by reducing tool changes, and provides durable performance across materials. Its carbide construction and advanced coatings are geared toward consistent thread quality and longer tool life, so you can trust it for repeatable results in challenging assemblies.

Application Threading (MIR)
Thread Form 55° Partial
Pitch or Pitch Range (0.5-1.0mm) (48-24 TPI)
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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Full Range: Carmex Carbide Tiny Tools - Small Threading Partial Profile 55° Tool (MIR)

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You are viewing MIR4L15A55K20. Click any other SKU to view its full details.

Product SKUPitch or Pitch RangeMinimum DiameterReachGradeHolderPriceStock Order
MIR3L15A55BMK (0.5-1.0mm) (48-24 TPI)3.215BMKSIM****H3£27.35 5 days
MIR3L15A55BXC (0.5-1.0mm) (48-24 TPI)3.215BXCSIM****H3£24.93 5 days
MIR4L15A55BMK (0.5-1.0mm) (48-24 TPI)4.115BMKSIM****H4£27.35 5 days
MIR4L15A55BXC (0.5-1.0mm) (48-24 TPI)4.115BXCSIM****H4£24.93 5 days
MIR5L15A55BMK (0.5-1.25mm) (48-24 TPI)5.115BMKSIM****H5£28.00 In Stock
MIR5L15A55BXC (0.5-1.25mm) (48-24 TPI)5.115BXCSIM****H5£25.48 5 days
MIR5L22A55BMK (0.5-1.25mm) (48-20 TPI)5.122BMKSIM****H5£29.35 5 days
MIR5L22A55BXC (0.5-1.25mm) (48-20 TPI)5.122BXCSIM****H5£26.68 5 days
MIR6L15A55BMK (0.5-1.5mm) (48-16 TPI)615BMKSIM****H6£28.55 In Stock
MIR6L15A55BXC (0.5-1.5mm) (48-16 TPI)615BXCSIM****H6£25.93 In Stock
MIR6L22A55BMK (0.5-1.5mm) (48-16 TPI)622BMKSIM****H6£30.00 5 days
MIR6L22A55BXC (0.5-1.5mm) (48-16 TPI)622BXCSIM****H6£27.28 In Stock
MIL6L22A55BXC (0.5-1.5mm) (48-16 TPI)622BXCSIM****H6£27.28 In Stock
MIR5L15A55K20 (0.5-1.25mm) (48-24 TPI)5.115K20SIM****H5£24.20 5 days
MIR4L15A55K20 Viewing(0.5-1.0mm) (48-24 TPI)4.115K20SIM****H4£23.65 5 days
MIR6L22A55K20 (0.5-1.5mm) (48-16 TPI)622K20SIM****H6£25.90 5 days
MIR6L15A55K20 (0.5-1.5mm) (48-16 TPI)615K20SIM****H6£24.60 5 days
MIR3L15A55K20 (0.5-1.0mm) (48-24 TPI)3.215K20SIM****H3£23.65 5 days
MIR5L22A55K20 (0.5-1.25mm) (48-20 TPI)5.122K20SIM****H5£25.35 5 days
MIR6L22A55TNX (0.5-1.5mm) (48-16 TPI)622TNXSIM****H6£27.65 5 days
MIR6L15A55TNX (0.5-1.5mm) (48-16 TPI)615TNXSIM****H6£26.30 5 days
MIL6L22A55BXC (0.5-1.5mm) (48-16 TPI)622BXCSIM****H6£27.28 In Stock
MIL3L15A55BMK (0.5-1.0mm) (48-24 TPI)3.215BMKSIM****H3£27.35 5 days
MIL3L15A55BXC (0.5-1.0mm) (48-24 TPI)3.215BXCSIM****H3£24.93 5 days
MIL3L15A55K20 (0.5-1.0mm) (48-24 TPI)3.215K20SIM****H3£23.65 5 days
MIL4L15A55BMK (0.5-1.0mm) (48-24 TPI)4.115BMKSIM****H4£27.35 5 days
MIL4L15A55BXC (0.5-1.0mm) (48-24 TPI)4.115BXCSIM****H4£24.93 In Stock
MIL4L15A55K20 (0.5-1.0mm) (48-24 TPI)4.115K20SIM****H4£23.65 5 days
MIL5L15A55BMK (0.5-1.25mm) (48-24 TPI)5.115BMKSIM****H5£28.00 5 days
MIL5L15A55BXC (0.5-1.25mm) (48-24 TPI)5.115BXCSIM****H5£25.48 5 days
MIL5L15A55K20 (0.5-1.25mm) (48-24 TPI)5.115K20SIM****H5£24.20 5 days
MIL5L22A55BMK (0.5-1.25mm) (48-20 TPI)5.122BMKSIM****H5£29.35 5 days
MIL5L22A55BXC (0.5-1.25mm) (48-20 TPI)5.122BXCSIM****H5£26.68 5 days
MIL5L22A55K20 (0.5-1.25mm) (48-20 TPI)5.122K20SIM****H5£25.35 5 days
MIL6L15A55BMK (0.5-1.5mm) (48-16 TPI)615BMKSIM****H6£28.55 5 days
MIL6L15A55BXC (0.5-1.5mm) (48-16 TPI)615BXCSIM****H6£25.93 5 days
MIL6L15A55K20 (0.5-1.5mm) (48-16 TPI)615K20SIM****H6£24.60 5 days
MIL6L15A55TNX (0.5-1.5mm) (48-16 TPI)615TNXSIM****H6£26.30 5 days
MIL6L22A55BMK (0.5-1.5mm) (48-16 TPI)622BMKSIM****H6£30.00 5 days
MIL6L22A55K20 (0.5-1.5mm) (48-16 TPI)622K20SIM****H6£25.90 5 days
MIL6L22A55TNX (0.5-1.5mm) (48-16 TPI)622TNXSIM****H6£27.68 5 days

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