Item #: 78530789Brand: Precision Twist DrillModel #: 021328 Features and Benefits Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys. Oxide gold finish provides a polished finish and prevents chip building, galling and welding on a workpiece. It is commonly used on low carbon, stainless steel and ferrous metals. Spiral flutes are constructed with a higher flute angle to remove chips more easily. Product Specifications Drill Bit Size (Inch) 7/16 Drill Bit Size (Decimal Inch) 0.4375 Drill Point Angle 135 Shank Taper Designation 2MT Drill Bit Material Cobalt Drill Bit Finish/Coating Oxide/Gold Flute Type Spiral Overall Length (Inch) 7-3/4 Flute Length (Inch) 3-7/8 Spiral Type Regular Spiral Cutting Direction Right Hand Point Type Notched Web Thinning Web-Thinned Specification Designation ANSI Drill Bit Grade General Purpose Series/List 209CO
