13/64″ Diameter 12″ Overall Length, Aircraft Extension Drill, High Speed Steel

Description

13/64″ Diameter, 12″ Overall Length, Aircraft Extension Drill .2031 Decimal Equiv. Flute Length-2-7/16″ These 12″ High Speed Steel Aircraft Extension Drills Are Manufactured To National Aerospace Standard 907. 135 Degree Split Point Is Self-Centering And Reduce Thrust. Ideal For Drilling In Mild Steels Where Extra Length For Reach Is Required. They Have A Black Oxide Surface Treatment That Is Abrasion Resistant, Reduces Chip Welding And Improves Chip Flow. Sizes Smaller Than 1/16 Have The Standard 118 Degree Standard Point.