1" 90° HSS 3-Flute Countersink 12" HSS Aircraft Letter Drills 1590" BODY DIAMETER 1/2" MATERIAL

1590" BODY DIAMETER 1/2" MATERIAL HIGH SPEED STEEL THREAD SIZE 1/4-28 CUTTING ANGLE 100° SUGGESTED PACK QTY 1

Single flute countersinks are great for chamfering

also known as machine countersinks

Ideal for hard metals

COHEX Series - HSS Quick-Change Hex Shank Drill Bits

1" 90° HSS 3-Flute Countersink 12" HSS Aircraft Letter Drills 1590" BODY DIAMETER 1/2" MATERIALSpecifications SIZE 1" OVERALL LENGTH 3 1 2" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1 2" NUMBER OF FLUTES 3 SHANK TYPE ROUND CUTTING ANGLE 90 SUGGESTED PACK QTY 1 3 flute countersinks, also known as center reamers, are commonly used to countersink holes for centers or to enlarge existing holes.