hardware screws
1by57 skt cap screw btn 1 4 28x1 4 pk50
socket head cap screw head type button 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 1 4 in . thread length 1 4 in . head height 1 4 in . thread dia . 1 4 in . package quantity 50 br b features b ul li package quantity 50 li li thread type fine li li thread size 28 li li meets astm f835 ansi b18 .3 li li material alloy steel li li item socket head cap screw li li class 3a li li drive size 5 16 li li finish black oxide li li thread style fully threaded li li min . tensile strength psi 145000 li li thread direction right hand li li length under head 1 4 li li head dia . 3 8 li li head height 1 4 li li meets exceeds astm f835 ansi b18 .3 li li head style button li li drive type hex socket li li decimal equivalent 0.250 li li overall length 1 4 li li thread length 1 4 li li rockwell hardness c39 to c44 li li temp . range 65 degrees f to 300 degrees f li li head type button li li min . tensile strength 145000 psi li li thread dia . 1 4 li li system of measurement inch li li dia . thread size 1 4 28 li li vented hole size not vented li ul