DRILLCO - 5/16-18,COMBINED TAP & DRILL - 2050 - 205A120C

Drill and Tap in a single pass, reducing cycle time, and therefore reducing the manufacturing cost of a part. The drill part of the tool produces a hole correctly sized for approximately 75% of thread.Ued on multi-spindle or hand held drill operations.
Self-centering split-point eliminates the need for center punching
Drill size produces a hole for about 75% of thread depth
Combination of drilling and threading reduces required operating time by half
Can be used in reversible portable power tools or fixed spindle machines
Bright finish for added lubricity
Can only be used in through holes