5/16" Cobalt Long Threaded Shank Drill Bit Live and the through hole supports

and the through hole supports use with retaining pins

Size m18 x 0

Part Number DWTSMR2-21X2

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

5/16" Cobalt Long Threaded Shank Drill Bit Live and the through hole supportsProduct 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,