I was doing some casual reading this morning and it struck me that when cutting threads (american unified standard) I have always used a shrp 'V' ground tool bit. That is I have never flattend the nose of the tool to form the proper flat crest of a american standad. In other words I have been cutting sharp V threads. Now all said, in order to cut proper american threads I would have to grind a tool for each thread pitch I am cutting and also get the proper gage to check that tool. I am sure that all taps and dies are cut for american standard and not sharp v so when I thread stock with sharp v tool I am screwing that thread into a american standard hole. I have noticed many times that my fit was a little sloppy as compard to purchased nuts and bolts. Could this be my problem? Does any one else concern themselves with this issue.

Thanks, Johnny