For the most comprehensive selection of nails and screws look for Grip-Rite the most popular brand of fasteners in America. No matter what the project or what size the job; Grip-Rite has the optimal fastening solution. As construction materials and techniques evolve fastener design keeps pace with the changing technology. Fastener needs vary from project to project and the safety and life expectancy of the project can be extended or compromised based upon the fastener used. Fasteners have been designed to meet the special needs of projects such as roofing or drywall and in many cases are known by the application for which they are intended. Features Approved for exterior use with all types of treated lumber For patio and deck construction Made to conform to ASTM A-153Specifications Color: Gray Finish: Hot-Dipped Galvanized Gauge: 9 Head Diameter: 0.313 in. Head Type: Flat Length: 3.5 in. Material: Steel Nail Type: Deck Point Type: Diamond Shank Type: Ring Shank Callout Size: 16D Container Size: 50 Indoor or Outdoor: Outdoor Weight: 51 lbs - SKU: ACHR172571