Tap and Drill Calculator.xls (707KB)

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Tap and Drill Calculator.xls (707KB) Powered By Docstoc
					                                           TAP DRILL SIZE CALCULATOR

                                                Step 1.
                                           Enter tap major
                            4. Read hole    diameter here
                              size here       x/x or .xxx
 HOLE SIZE (THEORETICAL)                                        2. Enter
                                                                   TPI
SELECT CLOSEST DRILL SIZE


CUTTING TAP INCH =           0.1796 in.        0.250 in.     MAJOR DIAMETER.
                              4.561 mm            12         THREADS PER INCH
      CUTTING TAPS
 68% to 70% recommended                           65 %       THREAD HEIGHT
                                                                               3. Enter
                                                                            desired % or
CUTTING TAP METRIC =          0.000 mm                 mm MAJOR DIA.        leave blank if
                                                                              uncertain
                             0.0000 in                 mm PITCH
                                                       %     THREAD HEIGHT


FORMING TAP INCH =           0.0000 in.                in.   MAJOR DIA.*
      FORMING TAPS            0.000 mm                       THREADS PER INCH
 55% to 75% recommended                                %     THREAD HEIGHT


FORMING TAP METRIC =          0.000 mm                 mm MAJOR DIA.
                             0.0000 in                 mm PITCH
  To calculate major
     diameter for                                      %     THREAD HEIGHT
   machine screw
     sizes, enter                                              Major diameter of
   machine screw #
                                                                machine screw
         here
                                                                    thread
                                             0.060

				
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posted:11/25/2011
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