hardware screws
tamper pruf screw 91742 mach screw flat 1 4 20x1 1 2l pk10
tamper resistant screw head type flat 18 8 stainless steel length 1 1 2 drive type torx finish plain thread size 1 4 20 driver size t30 head dia . 0.480 0.531 head height 0.161 head angle deg . 82 meets exceeds ansi asme b18 .6.3 package quantity 10 br b features b ul li finish plain li li item tamper resistant screw li li length 1 1 2 li li material 18 8 stainless steel li li package quantity 10 li li thread size 1 4 20 li li drive type torx li li driver size t30 li li head angle deg . 82 li li head type flat li li meets exceeds ansi asme b18 .6.3 li li head dia . 0.480 0.531 li li head height 0.161 li ul