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Posted to rec.crafts.metalworking
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Determining interior thread dimensions was When is an M45x3 not a 1.75x8 thread?
Louis Ohland wrote:
OK, finding the PD for an exterior thread was too easy. In the best
spirit of McGyver, how can one measure the interior PD?
Cerrosafe?
http://www.brownells.com/.aspx/pid=3..._CASTING_ALLOY
Wes
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