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Tru-Pos Locators UNJF thread

Need to measure some threaded holes 1/4-28 UNJF.
Anyone know where I can find plugs for this thread to check location?
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  • If all you need is location, why not just put the pitch (.0357) into your circle probing parameters?


    +1 & for good measure probe another circle 0.005" higher than the 1st circle in Z (assuming Z+ WP) then another 0.005" lower than the 1st one.


    That is what I will probably end up doing.
    I would rather be probing on a smooth surface rather than on jaggy threads. We will be using a thread mill (and for this thread that is new to us) and the TP tolerance is kinda tight at .008".
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  • If all you need is location, why not just put the pitch (.0357) into your circle probing parameters?


    +1 & for good measure probe another circle 0.005" higher than the 1st circle in Z (assuming Z+ WP) then another 0.005" lower than the 1st one.


    That is what I will probably end up doing.
    I would rather be probing on a smooth surface rather than on jaggy threads. We will be using a thread mill (and for this thread that is new to us) and the TP tolerance is kinda tight at .008".
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