Sea-Dog Stainless Steel Butt Hinge Constructed of corrosion-resistant cast 316 stainless steel, these butt hinges are designed to withstand the harsh marine environment. Consisting of two rectangular leaves that attach to the abutting surfaces of a door and door jamb, they are usually mortised in and are joined together by a hinge pin. Installs with four 10 FH fasteners not included. Constructed of Investment Cast 316 Stainless Sold in pairs Dimensions 205140-1 A - 1-58 B - 1316 C - 1316 D - 1-1