MACHINE
SCREWS TRUSS HEAD PHILLIPS |
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HEAD DIMENSIONS |
Nominal Size | Head Diameter | Head Height | Dimensions of Recess | Phillips Driver Size | |||||
Diameter | Dept | Width | |||||||
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||
2 | .194 | .180 | .053 | .044 | .104 | .091 | .059 | .017 | 1 |
3 | .226 | .211 | .061 | .051 | .110 | .097 | .066 | .017 | 1 |
4 | .257 | .241 | .069 | .059 | .112 | .099 | .069 | .017 | 1 |
5 | .289 | .272 | .078 | .066 | .128 | .115 | .085 | .018 | 1 |
6 | .321 | .303 | .086 | .074 | .158 | .145 | .085 | .027 | 2 |
7 | .352 | .333 | .094 | .081 | .165 | .152 | .091 | .028 | 2 |
8 | .384 | .364 | .102 | .088 | .173 | .160 | .099 | .029 | 2 |
10 | .448 | .425 | .118 | .103 | .188 | .175 | .115 | .030 | 2 |
12 | .511 | .487 | .134 | .118 | .248 | .235 | .128 | .032 | 3 |
14 | .557 | .530 | .146 | .129 | .263 | .250 | .143 | .033 | 3 |
1/4 | .573 | .546 | .150 | .133 | .263 | .250 | .143 | .033 | 3 |
5/16 | .698 | .666 | .183 | .162 | .352 | .339 | .193 | .059 | 4 |
3/8 | .823 | .787 | .215 | .191 | .388 | .375 | .228 | .065 | 4 |