SeaLux Marine 316 Stainless Steel 180 degree Flush Mount Hatch Hinge 2-3/4" x 1-5/8" for Boat, RVs (Pair) Pair of SeaLux Marine 316 Stainless Steel 180 degree flush mount 2-3/4" x 1-5/8" Hatch Hinges for boat, RV SeaLux 180 degree hinges fit flush in your boat and fold back 180 degrees so that your hatch can lay flat in the open position. They are ideal for flats and fishing boats. Constructed of stamped corrosion-resistant 316 stainless steel. These gleaming, mirror polished Stainless Steel Hatch Hinges are built to last and will stand up to the elements. Require RH #8 flat head mounting screws for perfectionist installation.