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Posted: Thu Jul 11, 2013 11:39 pm
by JPG
saminmn wrote:Not sure how to measure the setscrew's diameter. From outside of thread to outside of thread I got 0.246". The setscrew on my drill chuck is considerably larger at 0.310" between outsides of thread. So I am guessing I got incorrect info from CS and will put back together with setscrew it started with.

Thanks for input.

Imagine that!:D

Thread 'size' refers to the od (major diameter of the thread). So the set screw is a 1/4"(.250) and the drill chuck is 5/16"(.3125).