Combination Drill & Tap

Made of High Speed Steel, Drill & Tap in one operation using either a portable power tool or a stationary drilling machine such as a pedestal drill. 

Back taper beyond tap helps prevent thread damage from over drilling. 

1/4" hex shank ensures strong connection to the drill chuck. 

Designed to drill and tap through-holes up to 2 X nominal diameter. Drill point must break through the part prior to threading.