A 3/16 screw would have a nominal diameter of 3/16 = 0.1875 inch; whereas a
#10 screw diameter is [ 0.060 + (10 X 0.013) ] = 0.190 inch. As you said,
they are pretty close, about 0.0025. AFAIK, 3/16-32 is not a standard
machine screw.

Bob Swinney
"Tom Kay" wrote in message
...
Hi Knowledgeable Folks;

I am doing a design and need to know what difference there is between a
10-32 thread and a 3/16-32 thread. The seem very close on OD, they use the
same pilot drill, 5/32" and they obviously have the same thread pitch.

So, any info on this? If there is a difference, could you be specific
please, especially about which is bigger?

Thank you, Tom Kay, Ottawa Canada.