"J" HSS Threaded Shank Countersink (1/2") 5/8 Threaded Shank Countersinks Left-hand jobber drill bits are

Left-hand jobber drill bits are designed for general-purpose drill construction

Sold in packs of 6

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

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

The 135° split point tip ensures fast starts and precise drilling with less walking

"J" HSS Threaded Shank Countersink (1/2") 5/8 Threaded Shank Countersinks Left-hand jobber drill bits areSpecifications PILOT SIZE "J" DECIMAL EQUIVALENT . 2770" 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.