Grey Torx Screw are also of normal screw quality; it’s just a grey coating
Hardened Star Torx Screw for Milling Cutters are offered. These Torx screws are precision-engineered and meet construction standards. These torx screw are hardened up to 50-55 HRC for wear resistance. These Torx screw are mainly used in indexable tools, such as boring bars, insert cutters, and milling cutters. They are precise screw for better grip of the carbide insert with a pocket
