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 produc...

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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. Barrel, Dutch door, flush, mortise and surface bolts designed with ease of use and security in mind. Zinc plating offers corrosion resistance for all of your functional hardware needs.

  • National Hardware's 5/16"x2"x3" Square U Bolt is designed for securing various products to rectangular wood and metal objects.
  • Manufactured from stainless steel for durability.
  • Nuts included for easy installation.
  • For interior and exterior applications.
  • If plates are required use National's N222-323 plates.
  • National Hardware's 5/16"x2"x3" Square U Bolt is designed for securing various products to rectangular wood and metal objects.
  • Manufactured from stainless steel for durability.
  • Nuts included for easy installation.
  • For interior and exterior applications.
  • If plates are required use National's N222-323 plates.

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