..... Wonder what sort of fastener has a 25/32 head on it?....
WRENCH SIZES
31/32" is the old U.S.S. standard for 9/16" nut.
25/32" is the old U.S.S. standard for 7/16" nut.
21/32” is for Ford rod bolts.
19/32" is the old U.S.S. standard for 5/16" nut.
13/32” is the old U.S.S. standard for 3/16” bolt/nut
11/32" is the old standard for #8 hex screw. Still common in electrical work.