1/2" x 3" Carriage Bolts (25 PCS), Hot Dip Galvanized, Heavy Duty Round Head with Washers and Nuts

25 pcs 1/2" x 3" carriage bolts and 25 pcs USS flat washers and nuts | Made from premium carbon steel. Grade 307A bolts. Hot Dip Galvanized improve these carriage bolts strength, durability and corrosion resistance for outdoor use | Square neck provides the carriage bolt from rotating as it's tightened. Smooth and domed head makes it difficult to remove | Designed to have superior load-bearing capacity, ideal for connecting heavy timber and lumber, wood to metal (the square neck should be in the wood side) | Need 1/2-inch drill bit to pre-drill holes and 3/4-inch wrench for the nut. Widely use in wood construction, such as decks, pergolas, fences, playground equipment and furniture assembly