Manufacturer Part Number: C18025|Drill Bit Size (Inch)|29/64Drill Bit Size (Wire)|Drill Bit Size (Letter)|Drill Bit Size (mm)|Drill Bit Size (Decimal Inch)|0.4531Drill Bit Material|High Speed SteelDrill Point Angle (Degrees)|135Coating/Finish|Flute Type|SpiralCutting Direction|Right HandPoint Type|SplitPrimary Workpiece Material|Cast Iron; SteelSpecification Number|Coolant Through|NoNumber of Flutes|2Drill Bit Finish/Coating|Gold; OxideFlute Length (Inch)|4-3/16Primary Workpiece Material Code|K; PShank Diameter (Decimal Inch)|0.4531Overall Length (mm)|142.88Overall Length (Inch)|5-5/8Overall Length (Decimal Inch)|5.6250Spiral Type|RegularFlute Length (mm)|106.36Flute Length (Decimal Inch)|4.1875Series|1878Tool Application|Flute By Diameter Ratio|Shank Diameter (Inch)|29/64Shank Diameter (mm)|11.51Maximum Drilling Depth (Decimal Inch)|Maximum Drilling Depth (mm)|Maximum Drilling Depth (Inch)|Shank Length (mm)|36.52Shank Length (Decimal Inch)|1.4378Shank Length (Inch)|Number of Flats|3Drill Point Length (mm)|Drill Point Length (Decimal Inch)|Drill Bit Diameter Tolerance|+0.0000 to -0.0010 inWeb Thinning|Web-ThinnedWeb Configuration|TaperedShank Type|Straight-CylindricalTool Performance|High PerformanceStandards|ASME B94.11M; DIN 338Double Margin|Drill Bit Grade|Heavy DutyDrill Bit Size Range (Decimal Inch)|0.4000 - 0.5000Drill Bit Size Range (mm)|Material Grade|Specification Designation|Product Service Code|UNSPSC Code|23241634