THREAD ROLLING SCREWS
INDENTED HEX WASHER HEAD SLOTTED
All Dimensions in Inches
Screw Diameter Width Across Flats Width Across Corners Head Height Diameter of Washer Thickness of Washer Width of Slot Depth of Slot
Max. Min. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
4/40 .187 .181 .202 .060 .049 .243 .225 .019 .011 .039 .031 .042 .025
6/32 .250 .244 .272 .093 .080 .328 .302 .0.25 .015 .048 .039 .053 .033
8/32 .250 .244 .272 .110 .096 .348 .322 .031 .019 .054 .045 .074 .052
10/24 .312 .305 .340 .120 .105 .414 .384 .031 .019 .060 .050 .080 .057
10/32 .312 .305 .340 .120 .105 .414 .384 .031 .019 .060 .050 .080 .057
12/24 .312 .305 .340 .155 .139 .432 .398 .039 .022 .067 .056 .103 .077
1/4-20 .375 .367 .409 .190 .172 .520 .480 .050 .030 .075 .064 .111 .083
5/16-18 .500 .489 .545 .230 .208 .676 .624 .055 .035 .084 .072 .134 .100
3/8-16 .562 .551 .614 .295 .270 .780 .720 .063 .037 .094 .081 .168 .131