Standard and Heavy Hex and Square Head Machines Bolts, Flat and Dome Head Carriage Bolts, Shaker Screen, Plow Bolts and Dome Head Scraper Blade Bolts, Elevator Bolts available in Grades 2, 5, 8 and L9, bare metal, zinc or cadmium plated and galvanizedASTM A325 and A490 Bare Metal, Galvanized and Weathering Structural Assemblies and Bolts, Tension Control Bolt Assemblies