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Unread 03-08-2011, 06:18 PM   #8
sheepherder
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All right, let's not get frivolous here...This is serious business...

Quote:
Originally Posted by SIGP2101 View Post
How about using a simple thread gauge to find out.
Because there are only 3 threads on a grip screw, and the difference between 30 & 32 tpi won't show up until you get more threads to measure...

The blueprint clearly says Whitworth (pic below)...In 3/16" Whitworth, 24 tpi is coarse, 32 tpi is fine...There doesn't seem to be any 30tpi...as standard, anyway...
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File Type: jpg whitw.jpg (20.5 KB, 699 views)
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