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 a reliable barrier against unauthorized entries. Pry and tamper resistant security hasps, draw hasps, hinge hasps, plate and swivel staples and extra heavy duty security hasps add an extra layer of security from unwelcome guests. Zinc plating offers corrosion resistance for all of your functional hardware needs.