5/16" Cobalt Long Threaded Shank Drill Bit Live Part Number: assortment-kit-252453 Pieces -

Part Number: assortment-kit-252453 Pieces - Coarse Thread

Part Number DWTSMR2-21X2

Size m48 x 3

Part Number: 75X400DPAPL

5/16" Cobalt Long Threaded Shank Drill Bit Live Part Number: assortment-kit-252453 Pieces -Product 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,