#2 (.2210) 1/4-28 THREADED DRILL BIT, COBALT 2-1/8" LONG

Part# 12-03925
MFR Model# 352-2210
SizeCobalt #PN


  • Type D Threaded Square Shank Cobalt Adaptor
     Drill NAS 965 1/4-28 UNF Class 2A Thread
  • Surface Treated-Steam Oxide
  • Drills are manufactured to NAS 965 Type D construction.
  • Cobalt drills are for drilling hard, tough, high tensile strength materials in confined areas
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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This drill bits are 10 times sharper than your regular jober bits. A Little more pricey bit its worth it in the long run.

Mike W
July 15, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.