numbered screw sizes

[jwgary]

I know this is in the wrong thread (no pun intended), but does anyone out there have the formula for calculating the major diameter of a numbered screw (i. e. #10-32 screw)? I have what all the sizes are, I just don't remember the formula. TIA.

 

[Bryan Brenneman]

It's the number of the screw times . 013 + . 060

Example:
10-32
10 x . 013 + . 060 = . 190"

 

[jwgary]

That's it! Thanks.

 

[HiPerf360]

I love TDR, my friends would have ribbed me for knowing that... . The typical "smart@ss".

------------------
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'67 Barracuda 11. 71@111

Just orderd 3500 Black Sport, SLT+, Camel, 2wd, ETC/5spd... Hurry up DC

NHRA Member for life... LOL

 

[illflem]

I find it easier myself just to use a bolt and thread gauge,but it is good to know there is some sort of system to the numbered sizes.

 

[Bill Stockard]

Thanks, jwgary & Bryan

I was scratching my head just the other day about the same thing... . I knew there was a formula, but couldn't find it.

I'm gonna write the formula down on the shop wall. Can't paint the wall--too much info there!! #ad


Bill

[This message has been edited by Bill Stockard (edited 02-11-2001). ]