Clarkson-Osborn

#20 x 1/4"-28 HSS Threaded Shank Adapter Drill DR68220

M42 (8% Cobalt) - cobalt drills offer increased hardness, 1/4"-28 threaded shank provides a secure fit in the tool holder Toughness and better wear resistance compared to regular HSS Black oxide...

#21 Bright Finish Fast Spiral Jobber Drill Bit DR73221

HSS Bright finish 118° Degree point Fast spiral design is ideally suited for non-ferrous materials such as aluminum, zinc, copper, etc. Helix design also makes them well suited for deeper holes in...

#21 Bright Finish HSS Jobber Drill Bit DR15221

HSS 118° Degree point The bright finish polished flutes provide better chip flow for non-ferrous and softer materials Ideal choice for aluminum Clarkson Osborn Catalog

#21 Bright Finish HSS Jobber Drill Blank DR75221

Premium HSS Bright finish Made to the same length as jobber length drills Can be used as punches, gauges, pins or ground for special tools Clarkson Osborn Catalog

#21 Bright Finish HSS Left Hand Jobber Drill Bit DR03221

HSS Bright finish 118° Degree point Left hand twist - used in screw machine operations with left hand spindle rotation Can also be used as a screw extractor for drilling out broken studs or fasteners...

#21 Bright Finish HSS Stub Drill Bit DR78421

HSS Bright finish 118° Degree split point for fast penetration and accurate starting (self-centering) which eliminates "walking" and reduces the thrust force needed The short flute and overall length...

#21 Bright Finish Slow Spiral Jobber Drill Bit DR72221

HSS Bright finish 118° Degree point Slow spiral flute design - to be used for applications in brass, fiberglass, hard rubber and plastics The wide flutes and low helix angle allow a greater volume of...

#21 Carbide Tipped Jobber Drill Bit SC04221

Bright finish (TiN and TiAIN coatings available) 118° Degree point Regular spiral HSS body, carbide tip provides excellent wear resistance Recommended for drilling cast iron, composites, aluminum...

#21 Cobalt Aircraft Extension Drill Bit DR64721

Cobalt drills offer increased hardness, toughness and better wear resistance compared to regular HSS Gold oxide surface finish provides a polished finish and prevents chip building, galling and...

#21 Cobalt Jobber Drill Bit DR09221

Cobalt jobber drills offer increased hardness, toughness and better wear resistance compared to regular HSS Gold oxide surface finish provides a polished finish and prevents chip building, galling...

#21 Cobalt Stub Drill Bit DR12821

Cobalt stub drills offer increased hardness, toughness and better wear resistance compared to regular HSS Gold oxide surface finish provides a polished finish and prevents chip building, galling and...

#21 Cobalt Taper Length Drill Bit DR29221

Cobalt drills offer increased hardness, toughness and better wear resistance compared to regular HSS Gold oxide surface finish provides a polished finish and prevents chip building, galling and...