[TheForge] Machine screw size?

[Jeff & Leslie]

Today in a trash pile I found a little 1" wide blade, plane.  I found three 
pieces, the body, the blade, and the "wedge" that slips over the blade and 
tensions it when a screw is tightened thru this piece against the blade. 
I'm trying to find the screw and nothing I have fits.  A 10 - 32 starts 
easily and then after 1/8" it won't go anymore.  I don't have a metric that 
small so maybe that's it.  Anyone familiar with this situation and have a 
guess as to what size it is.  I could run a 10 - 32 tap thru it, or go to 
lowes and see if anything fits.  Thanks,

Jeff in WTF is it this hot Tallahassee