Feb 14, 2022 · ISO 9001:2015 certified. manufacturer of standard and custom screws. Types include self-piercing, u-drive, eye, dowel, drywall, particle board, framing, deck, jack, socket head cap, socket shoulder, thumb, wing, weld and concrete. Available in diameters from 0 to 8 in. and lengths from 1/8 to 24 in. or more.