Alvord Polk 03000 Solid Pilot Counterbore: 0.186" Dia, 0.112" Pilot
Solid Pilot Counterbore: 0.186" Dia, 0.112" Pilot 4-40" Fillister-Head Screw Compatible, 0.1562" Shank Dia, 3-7/8" OAL, High Speed Steel (MOQ=1, Pkg Qty=1)
Not Cancelable or Returnable!