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Carmex Carbide Tiny Tool - Threading - MIR - UNJ (UNJC,UNJF,UNJEF,UNJS) - K20 Grade - 5mm Minimum Diameter x 18mm Reach
| Application | Threading (MIR) |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch or Pitch Range | 20 |
| Minimum Diameter | 5 |
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Description
The Carmex Carbide Tiny Tools - Small Threading UNJ Tool (MIR) is a precision cutting tool designed for small threading applications. Built for engineers, machinists, and hobbyists alike, it delivers accurate UNJ threads on tiny parts with minimal effort.
- UNJ threading for high-precision small threads: Delivers accurate UNJ threads on miniature components, reducing rework and ensuring a precise fit for tight-tolerance parts.
- Premium K20 carbide for durability: Provides exceptional wear resistance and edge retention so the tool stays sharp longer in demanding threading work.
- Compact 5mm minimum diameter x 18mm reach for tight spaces: Lets you thread in confined areas and works across a wide range of machines and setups.
Designed to streamline your workflow, this tiny threading tool helps you complete precise threads quickly with confidence. The combination of UNJ geometry, carbide hardness, and compact sizing supports reliable performance across different machines, reducing downtime and boosting first-pass success on small-diameter parts.
Part Numbers
- Protool Part Number
- MIR5L1820UNJK20
- 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.
Full Range: Carmex Carbide Tiny Tools - Small Threading UNJ Tool (MIR)
View full collection →You are viewing MIR5L1820UNJK20. Click any other SKU to view its full details.
| Product SKU | Pitch or Pitch Range | Minimum Diameter | Reach | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MIR3L1532UNJBMK | 32 | 3.2 | 15 | BMK | SIM****H3 | £21.08 | 5 days | |
| MIR3L1532UNJBXC | 32 | 3.2 | 15 | BXC | SIM****H3 | £25.00 | 5 days | |
| MIR5L1528UNJBMK | 28 | 4.9 | 15 | BMK | SIM****H5 | £27.43 | 5 days | |
| MIR5L1528UNJBXC | 28 | 4.9 | 15 | BXC | SIM****H5 | £25.00 | In Stock | |
| MIR5L1820UNJBMK | 20 | 5 | 18 | BMK | SIM****H5 | £27.43 | 5 days | |
| MIR5L1820UNJBXC | 20 | 5 | 18 | BXC | SIM****H5 | £25.00 | 5 days | |
| MIR5L1820UNJK20 Viewing | 20 | 5 | 18 | K20 | SIM****H5 | £23.75 | 5 days | |
| MIR3L1532UNJK20 | 32 | 3.2 | 15 | K20 | SIM****H3 | £20.08 | 5 days | |
| MIR5L1528UNJK20 | 28 | 4.9 | 15 | K20 | SIM****H5 | £23.75 | 5 days | |
| MIR5L1528UNJTNX | 28 | 4.9 | 15 | TNX | SIM****H5 | £25.35 | 5 days | |
| MIL3L1532UNJBMK | 32 | 3.2 | 15 | BMK | SIM****H3 | £21.50 | 5 days | |
| MIL3L1532UNJBXC | 32 | 3.2 | 15 | BXC | SIM****H3 | £21.10 | 5 days | |
| MIL3L1532UNJK20 | 32 | 3.2 | 15 | K20 | SIM****H3 | £20.08 | 5 days | |
| MIL5L1528UNJBMK | 28 | 4.9 | 15 | BMK | SIM****H5 | £23.18 | 5 days | |
| MIL5L1528UNJBXC | 28 | 4.9 | 15 | BXC | SIM****H5 | £21.10 | 5 days | |
| MIL5L1528UNJK20 | 28 | 4.9 | 15 | K20 | SIM****H5 | £20.08 | 5 days | |
| MIL5L1528UNJTNX | 28 | 4.9 | 15 | TNX | SIM****H5 | £25.35 | 5 days | |
| MIL5L1820UNJBMK | 20 | 5 | 18 | BMK | SIM****H5 | £23.18 | 5 days | |
| MIL5L1820UNJBXC | 20 | 5 | 18 | BXC | SIM****H5 | £21.10 | 5 days | |
| MIL5L1820UNJK20 | 20 | 5 | 18 | K20 | SIM****H5 | £20.08 | 5 days |
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