Clarkson-Osborn

#27 x 1/4"-28 HSS Threaded Shank Adapter Drill DR66227

HSS 1/4"-28 threaded shank provides a secure fit in the tool holder Black oxide finish for increased wear resistance and added lubricity 135° Degree split point for fast penetration and accurate...

#27 x 1/4"-28 HSS Threaded Shank Adapter Drill DR67227

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...

#27 x 1/4"-28 HSS Threaded Shank Adapter Drill DR68227

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...

#28 Bright Finish Fast Spiral Jobber Drill Bit DR73228

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...

#28 Bright Finish HSS Jobber Drill Bit DR15228

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

#28 Bright Finish HSS Jobber Drill Blank DR75228

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

#28 Bright Finish HSS Left Hand Jobber Drill Bit DR03228

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...

#28 Bright Finish HSS Stub Drill Bit DR78428

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...

#28 Bright Finish Slow Spiral Jobber Drill Bit DR72228

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...

#28 Carbide Tipped Jobber Drill Bit SC04228

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...

#28 Cobalt Aircraft Extension Drill Bit DR64728

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...

#28 Cobalt Jobber Drill Bit DR09228

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...