Cobalt Threaded Drill ATS-10-021 #21

*MINIMUM ORDER OF 12 / CALL FOR PRICING*

Type “D” adapter drills are made from cobalt high speed steel and are 
manufactured to NAS 965 Type “D” specifications with 135° heavy duty 
split points and surface treated for drilling hard, tough high tensile 
strength materials. When drilling low tensile strength materials, the 
Type “D” cobalt drill will have a significantly greater tool life than 
the NAS 954 Type “B”, high speed steel adapter drill, resulting in a 
much lower cost per drill.