#21 HSS Threaded Shank Countersink (1/2") 100° Single-Flute Countersinks 3125" BODY DIAMETER 7/16" MATERIAL

3125" BODY DIAMETER 7/16" MATERIAL HIGH SPEED STEEL THREAD SIZE 1/4-28 CUTTING ANGLE 100° SUGGESTED PACK QTY 1

Made of high speed steel with a 118° conventional point

The 4-Flute Cross Tip design reduces vibrations and allows for faster dust removal

Flute length: 9"

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

#21 HSS Threaded Shank Countersink (1/2") 100° Single-Flute Countersinks 3125" BODY DIAMETER 7/16" MATERIALSpecifications PILOT SIZE #21 DECIMAL EQUIVALENT . 1590" BODY DIAMETER 1 2" MATERIAL HIGH SPEED STEEL THREAD SIZE 1 4 28 CUTTING ANGLE 100 SUGGESTED PACK QTY 1 Threaded countersink cutters can be used in adjustable or micro stop countersinking tools with a 1 4 28 threaded drive. They are made from high speed tool steel, precision ground to exact tolerances, and form relieved to ensure a 100 countersink angle concentricity.