Back tapered beyond tap toprevent thread damage from over-drilling
Quick change adaptor included in both metric and standard kits
Detailed Description: Greenlee Drill/Tap bit is made of corrosion resistant hardened high-speed steel with uncoated finish for durability. It provides complete hole drilling, tapping and deburring/countersinking in one operation with power drill and saves labor, time. It is used to tap up to 10-gauge mild steel, aluminum, copper and brass. Deburr/Countersink is provided on bit beyond back taper to prevent thread damage from over-drilling. Strong connection to drill chuck is established by high quality quick-change hex shank of size 1/4-Inch. quick-change adaptor is included in both metric and standard kits. It features split point design with web thinning for faster penetration and less walking, even on round surfaces. The bit has NC thread of size 12 - 24 TPI.
|Combination Drill/Tap Bits. 12-24NC. Complete hole drilling, tapping and deburring/countersinking in one operation with power drill saves labor and time. Back tapered beyond tap to prevent thread damage from over-drilling. Deburr/countersink also provided on bit beyond back taper. Made from hardened high-speed steel vs. carbon steel for longer life. High quality hex shank to ensure strong connection to drill chuck. Designed to tap up to 10-gauge metal. Quick change adaptor included in both metric and standard kits.
|High Speed Steel
|Split Point With Web Thinning
|Threads Per Inch