HILLMAN 5/8-11 in. D X 12 in. L Hot Dipped Galvanized Steel Hex Bolt 25 pkHex bolts are machine bolts that have been designed to adhere facing materials to prevent shear movement; specifically for use in wood to wood, wood to metal, or metal to metal applications. Galvanized, grade 2 hex bolts are recommended for most general uses and are corrosion resistant. Be sure to pre drill any holes and to use washers and nuts that are a similar grade and finish. * Machine bolt designed to fasten facing pieces of wood and or metal