acme thread question
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  1. #1
    Join Date
    Apr 2015
    North Carolina
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    Default acme thread question

    I bought a "lot" of machinist tools on fleabay. and I got what looks like a brand new acme thread tap. It was marked on the box as "Regal cutting tools 25/32-8 NA2GDBL LEADACME4FL X 9 0/AN2758 MOD201502-01" ON THE OUTER CARTON.AND "REGAL USA 210502N! 25/32-8 NA2G DB.LD ACME N2758 MOD" on the tool shank. My question is what size is it? I cant find anything like a 25/32" acme tap on any site that I have checked, and the largest diameter on this tool is .804 The tool is Apx. nine inches long and looks in perfect shape.I would like to get some use out of it but I am a newbie at this and have no idea what this is size wise. I would need to either buy the matching rod or make it on my sb9a but I have to know what size we are talking first

  2. #2
    tommy d Guest


    that is a double lead modified acme and a special order item. the company i work for has a lot of odd modified acme threads for various reasons, the main one being so it makes it harder for someone to duplicate the part.

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