hardware screws
tamper pruf screw 141550 mach screw rnd 1 4 20x1 1 2 l pk25
tamper resistant screw head type round 18 8 stainless steel length 1 1 2 drive type one way finish plain thread size 1 4 20 driver size 14 head dia . 0.443 0.472 head height 0.160 0.175 meets exceeds ansi asme b18 .6.3 package quantity 25 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 25 li li thread size 1 4 20 li li drive type one way li li driver size 14 li li head type round li li meets exceeds ansi asme b18 .6.3 li li head dia . 0.443 0.472 li li head height 0.160 0.175 li ul