These one-way sheet metal screws are constructed of steel and come in a chrome plated finish. These pan head fasteners are designed for use with commercial restroom partition hardware, and they can be used with many other general purpose applications. These #10 x 5/8 inch one-way pan head sheet metal screws contain a total of 100 fasteners per pack. The security drive heads of these fasteners allow for easy installation with a flat screwdriver, but require the use of a one-way screw remover tool. See Sentry Supply 650-7901 for screw sizes 6-8, Sentry Supply part 650-7902 for sizes 8-10, and Sentry Supply part 650-7903 for sizes 12-14, or Sentry Supply part 650-7904, which includes one of each one-way screw remover hand tools.