STI Thread Plug Gages
KATO STI (Screw Thread Insert) Thread Plug Gages are used to check the accuracy of the tapped hole. If the tapped hole is correct, the finished thread will also be accurate when the inset is installed. It is not necessary to gage the installed insert. Please note that both "Working Gages" and "Reference Gages" are shown tabulated. Working Gages are recommended for use with production since their greater tolerance allows for more wear. Reference Gages have pitch diameters at or very close to basic sizes and are to be used as master gages.