Combination Drill & Tap

• Made of high-speed steel - drill, and 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 a 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.
• Applications include:
• electrical
• construction
• plumbing
• automotive
• cabinet makers
• heating ventilation
• air conditioning installers.