HGT Technology Co. introduces square end mills built for high-hardness steel work around HRC 60. This series is aimed at finishing and semi-finishing where edge integrity and tolerance control matter on hardened components.
Optimized carbide substrate and stable 4-flute geometry combine with I8 coating to handle heat and abrasion at elevated hardness. Expect steady tool wear, clean walls, and reliable size control on die details, guides, and hardened inserts. Inch and metric sizes available.

Highlights
• I8-coated carbide tuned for ~HRC 60 hardened steels
• 4F geometry for stable engagement and fine finishes
• Square-end accuracy for shoulders, pockets, and walls
• Built for semi-finish/finish passes on hardened steel parts
• Inch & metric; standard and extended lengths

When your paths move into true hardened territory, this HRC 60 square-end series offers predictable finishes and tool life to keep polishing and rework down.

Cinco Industries is proud to be a national leader in supplying machinery and tooling to the cold forming and fastener industries. Our extensive range of products ensures that manufacturers have access to the most reliable tools and equipment for their specific needs, all supported by our commitment to quality and excellence in customer service.