TAPPING SCREWS
FLAT HEAD PHILLIPS
HEAD DIMENSIONS
Nominal Size Head Diameter Head Height Dimensions of Recess Phillips Driver Size
Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min.
2 .172 .150 .051 .040 .102 .089 .063 .017 1
3 .199 .175 .059 .048 .107 .094 .068 .018 1
4 .225 .200 .067 .055 .128 .115 .086 .018 1
5 .252 .225 .075 .062 .154 .141 .089 .027 2
6 .279 .249 .083 .069 .174 .161 .106 .029 2
7 .305 .274 .091 .076 .182 .169 .114 .030 2
8 .332 .300 .100 .084 .189 .176 .121 .031 2
10 .385 .348 .116 .098 .204 .191 .136 .032 2
12 .438 .397 .132 .112 .268 .255 .156 .036 3
14 .491 .447 .148 .127 .283 .270 .171 .039 3
1/4 .507 .462 .153 .131 .283 .270 .171 .035 3
5/16 .635 .581 .191 .165 .365 .352 .216 .061 4
3/8 .762 .700 .230 .200 .393 .380 .246 .065 4