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Carmex Carbide Tiny Tool - Threading - MIL - MJ - BMK Grade - 4.9mm Minimum Diameter x 15mm Reach (Left Hand)

Carmex Carbide Tiny Tool - Threading - MIL - MJ - BMK Grade - 4.9mm Minimum Diameter x 15mm Reach (Left Hand)

SKU:MIL4L150.8MJBMK

Carmex Carbide Tiny Tool – Small Threading MJ Tool (MIL) is a precision cutting instrument designed specifically for small-diameter threading tasks. Built around the MJ thread design, it delivers... Read more ↓
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ApplicationThreading (MIL)
Thread FormMJ
Pitch or Pitch Range0.8
Minimum Diameter4.9
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£27.43
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

Carmex Carbide Tiny Tool – Small Threading MJ Tool (MIL) is a precision cutting instrument designed specifically for small-diameter threading tasks. Built around the MJ thread design, it delivers consistent, accurate thread forms on miniature parts, making it ideal for engineers, machinists, and hobbyists working in tight spaces.

Made from premium carbide, this tiny threading tool combines durability with steady performance, so you can rely on clean cuts and long tool life even in demanding setups. Its compact form factors—4.9 mm minimum diameter and 15 mm reach in a left-hand configuration—expand your capabilities, enabling precise threading on small components across a wide range of machines and systems.

  • MJ thread design for high-precision small-threading: Delivers accurate thread profiles on tiny parts, improving fit, function, and repeatability in assemblies.
  • Premium carbide for durability and wear resistance: Withstands wear and maintains edge integrity for longer tool life and fewer replacements.
  • Compact 4.9 mm diameter and 15 mm reach (Left Hand): Accesses tight bores and pockets with confidence, enabling versatile threading across multiple applications and machines.

This tool is built to support reliable results across MIL-grade applications, helping you optimize setup times, reduce scrap, and deliver consistent performance even in production environments. Whether you’re refining components in electronics housings, small automotive parts, or precision instruments, the Carmex Tiny Tool delivers trustworthy threading capability with a compact, durable design.

Part Numbers

Protool Part Number
MIL4L150.8MJBMK
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 MJ Tool (MIR)

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You are viewing MIL4L150.8MJBMK. Click any other SKU to view its full details.

Product SKUThread FormPitch or Pitch RangeMinimum DiameterReachGradeHolderPriceStock Order
MIR3L150.7MJBMK MJ0.73.215BMKSIM****H3£27.43 5 days
MIR3L150.7MJBXC MJ0.73.215BXCSIM****H3£25.00 In Stock
MIR4L150.8MJBMK MJ0.84.915BMKSIM****H4£21.08 5 days
MIR4L150.8MJBXC MJ0.84.915BXCSIM****H4£25.00 In Stock
MIR5L151.0MJBMK MJ1515BMKSIM****H5£27.48 In Stock
MIR5L151.0MJBXC MJ1515BXCSIM****H5£25.00 5 days
MIR4L150.8MJK20 MJ0.84.915K20SIM****H4£20.08 5 days
MIR3L150.7MJK20 MJ0.73.215K20SIM****H3£20.08 5 days
MIR5L151.0MJK20 MJ1515K20SIM****H5£20.08 5 days
MIL3L150.7MJBMK MJ0.73.215BMKSIM****H3£23.18 5 days
MIL3L150.7MJBXC MJ0.73.215BXCSIM****H3£21.10 5 days
MIL3L150.7MJK20 MJ0.73.215K20SIM****H3£20.08 5 days
MIL4L150.8MJBMK ViewingMJ0.84.915BMKSIM****H4£27.43 5 days
MIL4L150.8MJBXC MJ0.84.915BXCSIM****H4£21.10 5 days
MIL4L150.8MJK20 MJ0.84.915K20SIM****H4£20.08 5 days
MIL5L151.0MJBMK MJ1515BMKSIM****H5£21.50 5 days
MIL5L151.0MJBXC MJ1515BXCSIM****H5£21.10 5 days
MIL5L151.0MJK20 MJ1515K20SIM****H5£20.08 5 days

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