Whether for home, farm, builder or industrial customers, National has all the right hardware in the sizes and finishes you need. With over a century of service National is committed to maintaining the highest level of product quality, innovation and manufacturing technology. It is a 12-inch hinge crafted from zinc-plated steel, offering exceptional durability and resistance to corrosion. Designed for use with 3/8-inch bolts, it supports up to 150 lbs, making it ideal for securing gates and doors.