semco T style crank

A home owner from Colorado says:
November 22, 2016
Gentlemen: I have Semco products in the house; need to replace some regular cranks with T handles but don't know if I need 3/8 inch or 11/32 or whatever to do so. Iam not presently at the subject home. Any idea which would fit Semco, pre 2005 ? thanks
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Tom from SWISCO responded:
November 23, 2016
After looking into it, it seems that many Semco windows used Truth hardware, which all had 11/32" splines. While there is a good chance this is what you need, it's no guarantee. You may want to measure the hardware itself just to be sure.
T Handle, 11/32"
T Handle, 11/32"
39-102
$7.45
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