Product Details: Manufacturer Part Number: BDNA--20916-1|Drill Bit Size (Inch)|5/16Drill Bit Size (Letter)|Drill Bit Size (Wire)|Drill Bit Size (mm)|Drill Bit Size (Decimal Inch)|0.3125Drill Point Angle|135Tool Material|High-Speed SteelShank Type|Weldon FlatCutting Direction|Right HandPoint Type|SplitSeries|Drill Length Type|MechanicsFlute Type|SpiralTool Application|Number Of Pieces|Primary Workpiece Material|Carbon Steel; Cast Iron; High Alloy Steel; High Tensile Strength Alloy; Stainless Steel; Steel2Primary Workpiece Material Code|Standards|Shank Diameter (mm)|Shank Diameter (Inch)|Shank Diameter (Decimal Inch)|Overall Length (Decimal Inch)|4.0000Overall Length (mm)|Overall Length (Inch)|4Flute Length (Inch)|2-1/2Flute Length (Decimal Inch)|Hex Size (Inch)|Maximum Drilling Depth (Decimal Inch)|For Use With|Coolant Through|NoCoating/Finish|OxideNumber Of Flats|3Web Thinning|Web-ThinnedWeb Configuration|ParallelTool Performance|General PurposeSpiral Type|RegularProduct Service Code|UNSPSC Code|