Tap drill size calculator
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.
Select tap type
Cutting tap
Forming tap
Select thread type
UNC
UNF
Metric
STI - UNC
STI - UNF
STI - Metric
Select thread
Select percent thread
65 %
50 %
55 %
60 %
65 %
75 %
80 %
Nominal diameter:
Hole size:
in (
mm)
Closest standard drill:
Standard cutting tap drill: