MACHINE SCREWS
FILLISTER HEAD SLOT
All Dimensions in Inches
Screw 
Diameter
Head Diameter Head Height Slot Width Slot Depth
Side Height Total Height
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
2/56 .140 .124 .062 .053 .083 .066 .031 .023 .037 .025
4/40 .183 .166 .079 .069 .107 .088 .039 .031 .048 .035
6/32 .226 .208 .096 .086 .132 .111 .048 .039 .060 .045
8/32 .270 .250 .113 .102 .156 .133 .054 .045 .071 .054
10/24 .313 .292 .130 .118 .180 .156 .060 .050 .083 .064
10/32 .313 .292 .130 .118 .180 .156 .060 .050 .083 .064
1/4-20 .414 .389 .170 .155 .237 .207 .075 .064 .109 .087
5/16-18 .518 .490 .211 .194 .295 .262 .084 .072 .137 .110