Crown Bolt 01170 1/4 Inch x 2-1/2 Inch Coarse Thread Hot Dipped Galvanized Carriage Bolts, 50-Count Galvanized 1/4 inch x 2-1/2 inch carriage bolts For general applications 1/4 inch body diameter and thread pitch 2-1/2-inch fastener length Galvanized finish with Rust-Oleum certified rust protection