Re: Several questions...

Posted by Owen_Dyneto On 2012/2/18 16:19:58

I would assume the difference is the "fullness" of the thread cut(75% thread, etc.) or perhaps the profile of the thread in the block to accept rolled threads.

Even though both are nominally 7/16-20, try a rolled thread stud into a prewar block, or visa versa and I suspect you'll have your answer.