The AC Infinity rack screw set is designed for installing various rack mount devices such as shelves, cable managers, network and AV equipment. The screws are constructed of high-grade strengthened carbon steel which prevents stripping. With a zinc chromate plating, they are more corrosion and rust resistant than black oxide coatings. Pre-installed nylon washers on each screw averts scratching equipment. Each set includes 50 pieces of 10-32 screws and washers; and a reusable plastic screw jar.