Taper Shank: Tolerance Grade AT3,

Heat Treatment Hardness: HRC50-52

Product Material: 42CrMo

Body Precision: 0.003mm
Product Advantages: Vacuum heat treatment, uniform quenching for high hardness, and excellent shock resistance. The taper shank conforms to AT3 tolerance grade and is inspected using standard gauges from Germany’s DIEBOLD, ensuring precise and stable positioning accuracy.