Proper pre-holes are required prior to tapping. Failure to follow the guidelines in these charts could result in serious damage to your tool.
Select the measuring system you wish to view:
All Styles TT2″
UN Threads/American Hole Sizing
Metric Thread/American Hole Sizing
Metric Thread/Metric Hole Sizing
TT3.5″
UN Threads
Metric Threads
MD Technology offers the latest technology for automating your tapping applications.
