The Huttig-Grip 8d 2-1/2" Spiral Shank Deck Nails with each box containing approximately 580 nails. These galvanized steel nails are grade 2, 11 gauge, and have a head diameter of 9/32 inches. The nails are designed with a flat head style and a spiral shank for improved holding power in various types of deck materials. Perfect for home improvement projects involving building and hardware, these deck nails are a reliable and durable choice for fastening deck boards securely.