Carmex Thread Mills Mini Type is a solid carbide internal-threading tool engineered for precision work in hardened materials up to 62 HRc. It’s the go-to choice for machinists who need reliable UNC/UNF/UNEF/UNS threads in tight or hard workpieces.

• Size & thread form: 1/4" diameter, 28 TPI thread mill compatible with UNC, UNF, UNEF and UNS thread forms.
• Material: Solid carbide for exceptional wear resistance and heat tolerance when machining hard steels and alloys.
• Cutting performance: Optimized geometry delivers a clean, consistent cut with an excellent surface finish on threaded profiles.
• Interface: MT9 compatibility for secure mounting in compatible tool holders.
• Hard material capability: Designed to cut hardened materials up to 62 HRc with reliable performance.

With this mini thread mill, you can create precise internal threads in hardened components without tapping, reducing cycle times and the risk of thread damage. It delivers repeatable, burr-free threads and is well suited for aerospace, automotive, mold making, and precision engineering applications. For best results, use proper coolant, stable workholding, and appropriate feeds and speeds to maximize tool life and thread quality.