MACHINE SCREWS
PAN HEAD PHILLIPS
HEAD DIMENSIONS
All Dimensions in Inches
Basic
 Screw 
Diameter
Head Diameter Head Height Dimensions of Recess Phillips
 Driver 
Size
Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min.
2/56 .167 .155 .062 .053 .104 .091 .059 .017 1
3/48 .193 .180 .071 .062 .112 .099 .068 .019 1
4/40 .219 .205 .080 .070 .122 .109 .078 .019 1
5/40 .245 .231 .089 .079 .158 .145 .083 .028 2
6/32 .270 .256 .097 .087 .166 .153 .091 .028 2
8/32 .322 .306 .115 .105 .182 .169 .108 .030 2
10/24 .373 .357 .133 .122 .199 .186 .124 .031 2
10/32 .373 .357 .133 .122 .199 .186 .124 .031 2
12/24 .425 .407 .151 .139 .259 .246 .141 .034 3
1/4 .492 .473 .175 .162 .281 .268 .161 .039 3
5/16 .615 .594 .218 .203 .350 .337 .193 .059 4
3/8 .740 .716 .261 .244 .393 .380 .233 .065 4