G5047 Screw Machine Drill Aircraft List Number 159 Number of Pieces 1 Heavy Duty Grade High Speed Steel Black Oxide Finish Split Point Drill Point (Deg.) 135 Wire Size #3 Decimal Equivalent 0.2130 Flute Length (In.) 1-1/4 Overall Length (In.) 2-3/8 Shank Dia (In.) 0.2130 For Alloy Carbon And Tool Steels And Cast Iron Meets/Exceeds National Aerospace Standards (NAS) 907 Type C