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robminibcy

what size drill is needed to drill a hole for a 1/4unf thread?
Nov 17 2013 08:45 PM
  • robminibcy's Photo
    robminibcy
    I'm guessing the f in unf is fine? So fine. Its to drill and tap the holes for a heater tap on the head
    Nov 17 2013 09:02 PM
  • Domneon's Photo
    Domneon
    5.5mm
    my charts are old and sometimes difficult to follow
    Nov 17 2013 09:08 PM
  • robminibcy's Photo
    robminibcy
    :-D cheers
    Nov 17 2013 09:15 PM
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