Precision Twist Drill - Letter K 135° Cobalt Jobber Drill

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Item #: 78508694Brand: Precision Twist DrillModel #: 015311 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 (Letter) K Drill Bit Size (Decimal Inch) 0.2810 Drill Point Angle 135 Drill Bit Material Cobalt Drill Bit Finish/Coating Oxide/Gold Flute Type Spiral Cutting Direction Right Hand Shank Type Straight Coolant Through No Flute Length (Inch) 2-15/16 Overall Length (Inch) 4-1/4 Point Type Split Point Spiral Type Regular Spiral Specification Designation ANSI; NAS Web Configuration Tapered Web Thinning Web-Thinned Specification Number NAS 907 Drill Bit Grade Heavy Duty Series/List R15CO Show more