How To Use NPT Thread Gages - The Gage Store - The Explore further
2017-8-26u2002·u2002Using the NPT or NPTF or ANPT gages can also be simple since you only have 1 primary L1 gage that acts as both Go and NoGo using the gauge notch(s) or ring face to line up with the end of the product thread +/_ the allowable tolerance the basic thread form is within compliance.
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