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Machine screw diameter is measured on the outside of the threads. See our US Machine Screw Diameter Table to cross reference this measurement to a numbered diameter. For information on US thread counts see the US Threads Per Inch Table.
* 10-32 is a fine thread, but it is listed under coarse thread because it is very common.
Screws with machine threads for use with a nut or in a tapped hole. Also referred to as a stove bolt.
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