Manufacturer Part Number: 18956615-907839|Series|STPrimary Workpiece Material|Hardened Steel Greater Than 44HRC; Stainless Steel; Steel Less Than 44HRC; TitaniumFor Use With|OkumaMill Diameter (Inch)|1/2Length of Cut (Inch)|1Number Of Flutes|5End Mill Stick-Out Length (Inch)|1-3/8Centercutting|YesCoating/Finish|AlTiCrNCoolant Through|YesCorner Radius (Decimal Inch)|0.0300Corner Radius Tolerance|+/-.002Cutting Direction|Right HandEnd Mill Material|Solid CarbideEnd Mill Overall Length (Fractional Inch)|3-1/2Helix Angle|38Primary Workpiece Material Code|H; M; P; SShank Type|ST NotchVariable Helix|NoVariable Index|NoMill Diameter Tolerance|+.000/-.002Nose Diameter (Inch)|1-3/4Projection|1-3/4Taper Size|CAT40 Dual ContactBalanced To Rpm|20000TIR (Decimal Inch)|0.000300Angle Radius|45.00Knob Diameter (Decimal Inch)|0.7400Knob Length (Decimal Inch)|1.6200Neck Diameter (Decimal Inch)|0.4900Thread Size (Inch)|5/8-11Includes|Interactive Dashboard; CAT40 Holder & Locking Screw; Retention Knob & End MillAdditional Information|CAT40 AssemblyUNSPSC Code|