7/8" 82° HSS 6-Flute Chatterless Countersink 12" Cobalt Aircraft Number Drills 135° split point tip for

135° split point tip for fast

SIZE 1-1/2" OVERALL LENGTH 5-3/8" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1/2" NUMBER OF FLUTES 4 SHANK TYPE ROUND CUTTING ANGLE 60° SUGGESTED PACK QTY 1

Super hard titanium nitride surface treatment improves drill life

Diameter: 3/16″

PILOT SIZE #21 DECIMAL EQUIVALENT

7/8" 82° HSS 6-Flute Chatterless Countersink 12" Cobalt Aircraft Number Drills 135° split point tip forSpecifications SIZE 7 8" OVERALL LENGTH 2 3 4" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1 2" NUMBER OF FLUTES 6 SHANK TYPE ROUND CUTTING ANGLE 82 SUGGESTED PACK QTY 1 6 flute countersinks, also known as chatterless countersinks, are designed to remove more metal compared to countersinks with fewer flutes. They are also more effective on harder materials and provide a more chatter free cut.