hardware screws
tamper pruf screw 21530 mach screw btn 1 4 20 x 5 8 l pk25
tamper resistant screw head type button case hardened steel length 5 8 drive type hex finish black oxide thread size 1 4 20 driver size 5 32 head dia . 0.419 0.437 head height 0.122 0.132 meets exceeds ansi asme b18 .6.3 package quantity 25 br b features b ul li finish black oxide li li item tamper resistant screw li li length 5 8 li li material case hardened steel li li package quantity 25 li li thread size 1 4 20 li li drive type hex li li driver size 5 32 li li head type button li li meets exceeds ansi asme b18 .6.3 li li head dia . 0.419 0.437 li li head height 0.122 0.132 li ul