N Cobalt Long Threaded Shank Drill Bit Quantity:1 Size 3/8"-#20

Size 3/8"-#20

Part Number: Assortment Kit #3851921 Pieces

Part Number: 56C450HCSSS/316

Part Number D/ASP1/2

Flute Length 3-15/16"

N Cobalt Long Threaded Shank Drill Bit Quantity:1 Size 3/8"-#20Product 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,