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Old 09-26-2023, 08:55 PM   #16
johnneilson
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Default Re: Robertson screws
Quote:
Originally Posted by nkaminar View Post
So #12 is actually 12/64 size? Does that mean that #10 is 5/32 and #8 is 1/8, etc.? I am reaching for my calipers.
No, the standard numerical sizes as follows;
starting with a "0" the major diameter is .060

add .013" for every number up

"2" is .060 + .026

"4" is .060 + .052

this from 7th grade machining class, I guess schools are missing out now...

J
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