Technical Info-NPT Thread Dimensions

• Gauge dimensions are as per ASME B1.20.1.
• Gauges are supplied as Basic Step & Min/Max Step.
• The Basic Step gauge when screwed onto the threads of the component by hand, should be flush with the end of the component face within 1 turn(npt thread calculator)
• When using a Min/Max Step type gauge, the end of the component face should be flush between the Minimum and Maximum steps.