hardware screws
unbrako 4322 flat head cap screw 1 4 28x3 4 pk 100
socket head cap screw head type flat material alloy steel black oxide finish thread size 28 drive type hex socket drive size 5 16 in . thread type fine thread style fully threaded thread direction right hand length under head 9 16 in . thread length 9 16 in . head height 1 4 in . thread dia . 1 4 in . head dia . 3 8 in . temp . range 50 degrees f to 550 degrees f rockwell hardness 39 to 43 min . tensile strength 160000 psi meets exceeds astm a574 ansi b18 .3 package quantity 100 br b features b ul li package quantity 100 li li thread type unf li li thread size 1 4 28 li li meets astm a574 ansi b18 .3 li li material alloy steel li li item socket head cap screw li li class 3a li li drive size 5 32 li li finish black oxide li li thread style fully threaded li li min . tensile strength psi 160000 li li thread direction right hand li li length under head 0.589 li li head dia . 0.531 li li head height 0.161 li li meets exceeds astm a574 ansi b18 .3 li li head style flat li li drive type hex socket li li decimal equivalent 0.156 li li overall length 3 4 li li thread length 0.589 li li temp . range f 50 to 550 li li rockwell hardness 40 to 43 li ul