Below is a comprehensive drill and tap size chart for all drills and taps, imperial and metric, up to millimetres ( in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly. formula for tap/drill sizes (inch) Figures in table show amount to subtract from O.D. of screw to obtain specific percentages of thread. Select nearest size commercial stock drill. tap-drill chart. recommend tap drill to use for 75% depth of thread.
How to calculate Drill bit size for tapping ? (English), time: 2:45Tags: Ian fleming james bond novels s , , Tso commands in mainframes pdf , , Mobile game for nokia c2-03 white display . tap-drill chart. recommend tap drill to use for 75% depth of thread. © American Fastener Technologies Corporation Nine Frontier Drive, Gibsonia, PA - U.S.A. Tap Drill & Thread Height Chart This chart displays a variety of UN Thread sizes, their likely Tap Drills and the resulting Theoretical Thread Height Percentage. This percentage is thoeretical as holes are often drilled slightly oversized. Typically, tap drills are selected to result in a 60% - .