Transcription of Machine Screw and Drill Size Chart (English)
1 Machine Screw and Drill size Chart ( english ) clearance Hole Drills Screw Designation Tap Drill size Close Fit Loose FitNumber DiameterPitchTap SizeDrillDiameterDrillDiameterDrillDiame teror dia.(inch)(threads/inch) size (inch) size (i nch) size (inch)#0 #1 #1 #2 #2 #3 #3 #4 #4 #4 #5 #5 #6 #6 #8 #8 #10 #10 #12 #12 #14 #14 - - -18F - -165 - 24Q - 14U - 2025/64 - 1327/64 - 2029/64 For 75% thread engagementCoarse thread (UNC)
2 Used for aluminum, brass, cast iron, plastic; Fine thread (UNF) for steel, titaniumTypical Machine Screw Designation1/4 -20 -UNCx 3/4"Nominal Dia. (inch) Threads per inchThread SeriesLength of thread(or Screw #)UNC - Unified Coarse UNF - Unified Fi
