3/8" Cobalt Short Threaded Shank Drill Bit Channable Exclude Part Number D/ARSD3/8X39/64

Part Number D/ARSD3/8X39/64

Part Number: 31X400DPAPL

Part Number: BIT-DWTB1-8

Part Number: 62C250HCSAL

Length Under Head: 6-1/2"

3/8" Cobalt Short Threaded Shank Drill Bit Channable Exclude Part Number D/ARSD3/8X39/64Product Description Threaded shank drill bits are type D adapter style. They are made from M42 8% cobalt and are manufactured to NAS 965 Type "D" specifications. They have 135 heavy duty split point 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 965 Type B high speed steel adapter drill,