Fiberfast bolts are provided in two styles and four diameters (1⁄4", 3⁄8", 1⁄2" and 5⁄8") and range in length from 11⁄4" to 31⁄2". The flanged style incorporates a molded washer collar which eliminates the need for a washer. The flanged style is provided for 1⁄4" and 1⁄2" diameter bolts. Flanged bolts are available in 3⁄8" diameter as a special order item. The hex head style is provided for all 3⁄8" and 5⁄8" diameter bolts. All Fiberfast bolts are not fully threaded, therefore, shoulder length (nonthreaded portion) dimensions have been provided. Fiberfast bolts are ideal for mechanical connections that require a high degree of corrosion resistance. The 3⁄8" diameter fasteners are recommended for all channel fitting mechanical connections. All Fiberfast bolts are manufactured from glass-reinforced polyurethane and are packaged in bags containing 25 pieces.