TAPPING SCREWS
PAN HEAD SLOT
HEAD DIMENSIONS
Nominal Size Head Diameter Head Height Slot Width Slot Depth
Slotted Recessed
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
2 .167 .155 .053 .045 .062 .053 .031 .023 .031 .022
3 .193 .180 .060 .0.51 .071 .062 .035 .027 0.36 .026
4 .219 .205 .068 .058 .080 .070 .039 .031 .040 .030
5 .245 .231 .075 .065 .089 .079 .043 0.35 .045 .034
6 .270 .256 .082 .072 .097 .087 .048 .039 .050 .037
7 .296 .281 .089 .079 .106 .096 .048 .039 .054 .041
8 .322 .306 .096 .085 .115 .105 .054 .045 .058 .045
10 .373 .357 .110 .099 .133 .122 .060 .050 .068 .053
12 .425 .407 .125 .112 .151 .139 .067 .056 .077 .061
14 .476 .457 .139 .126 .169 .156 .075 .064 .085 .068
1/4 .492 .473 .144 .130 .175 .162 .075 .064 .087 .070
5/16 .615 .594 .178 .162 .218 .203 .084 .072 .106 .085
3/8 .740 .716 .212 .195 .261 .244 .094 .081 .124 .100