Sems & Specials is a member of the National Fastener Distributors Association and specializes in the manufacturing of domestic fastener products and services, such as threaded screw and washer assemblies. The company manufactures decimal and metric components in diameters that range from No. 2 s to a half-inch and one-eighth to five inches in length. It manufactures products with low, medium and high carbon steel, stainless steel, brass, aluminum, bronze and copper. Sems & Specials is headquartered in Rockford, Ill., and is ISO 9001: 2000 standard certified.