MACHINE SCREWS
FILLISTER HEAD SLOT
HEAD DIMENSIONS

All Dimensions in Inches
Nominal Size Head Diameter Head Height Slot Width Slot Depth
Side Height Total Height
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
2 .140 .124 .062 .053 .083 .066 .031 .023 .037 .025
3 .161 .145 .070 .061 .095 .077 .035 .027 .043 .030
4 .183 .166 .079 .069 .107 .088 .039 .031 .048 .035
5 .205 .187 .088 .078 .120 .100 .043 .035 .054 .040
6 .226 .208 .096 .086 .132 .111 .048 .039 .060 .045
7 .248 .229 .105 .094 .144 .122 .048 .039 .065 .049
8 .270 .250 .113 .102 .156 .133 .054 .045 .071 .054
10 .313 .292 .130 .118 .180 .156 .060 .050 .083 .064
12 .357 .334 .148 .134 .205 .178 .067 .056 .094 .074
14 .400 .376 .165 .151 .230 .201 .075 .064 .105 .084
1/4 .414 .389 .170 .155 .237 .207 .075 .064 .109 .087
5/16 .518 .490 .211 .194 .295 .262 .084 .072 .137 .110
3/8 .622 .590 .253 .233 .355 .315 .094 .081 .164 .133