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* #5 -- 5 multiplied by 13 equals 65, plus 0.060 equals 0.125 | * #5 -- 5 multiplied by 13 equals 65, plus 0.060 equals 0.125 | ||
* #10 -- 10 multiplied by 13 equals 0.130, plus 0.060 equals 0.190 | * #10 -- 10 multiplied by 13 equals 0.130, plus 0.060 equals 0.190 | ||
== External Links == | |||
* [http://homemetalshopclub.org/hints/videos/video.php?file=http://www.homemetalshopclub.org/hints/videos/making_bolts.mp4&caption=Making+Bolts "Making Scale Hex Head Bolts", <i>Home Metal Shop Club</i>] | |||
Revision as of 22:10, 15 May 2014
Machine Screw Diameters
The Miniature Locomotive, July-August 1954
Machine screws are numbered as distinct from Cap Screws, Bolts, etc, and range usually from #0 to #12. A convenient method of finding the exact diameter if a table is not handy is as follows:
- Multiply the number of 13 and add sixty thousandths. The answer will be thousandths.
Examples:
- #0 -- 0 multiplied by 13 equals 0, plus 0.060 equals 0.060
- #3 -- 3 multiplied by 13 equals 39, plus 0.060 equals 0.099
- #5 -- 5 multiplied by 13 equals 65, plus 0.060 equals 0.125
- #10 -- 10 multiplied by 13 equals 0.130, plus 0.060 equals 0.190