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. Providing latching and fastening options for all of your indoor and outdoor uses. A deep selection of chain accessories like clevis hooks and quick links are made from the best materials for high strength and weight ratings. Utilizing 300 series stainless steel with 18% chromium, which gives the corrosion protection as pure chromium in chrome plating. These products will not corrode or rust when exposed to the weather.