hardware screws
disco 5550pk hex screw 4.2 x20mm l hex pk50
hexscrew 4.2 x20mm lhexpk50 br b features b ul li finish black phosphate li li item sheet metal screw li li length 20mm li li material steel li li package quantity 50 li li size 4.2 li li drive type hex li li head type hex li li head dia . 7mm li li head height 3mm li ul