THREAD ROLLING SCREWS
FLAT HEAD PHILLIPS 
All Dimensions in Inches
Screw
Diameter
Head Diameter Head Height Dimensions of Recess Phillips 
Driver 
Size
Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min.
4/40 .225 .200 .067 .055 .128 .115 .086 .018 1
6/32 .279 .249 .083 .069 .174 .161 .106 .029 2
8/32 .332 .300 .100 .084 .189 .176 .121 .031 2
10/24 .385 .348 .116 .098 .204 .191 .136 .032 2
10/32 .385 .348 .116 .098 .204 .191 .136 .032 2
12/24 .438 .397 .132 .112 .268 .255 .156 .036 3
1/4/20 .507 .462 .153 .131 .283 .270 .171 .035 3
5/16-18 .635 .581 .191 .165 .365 .352 .216 .061 4
3/8-16 .762 .700 .230 .200 .393 .380 .246 .065 4