Upgrade your outdoor projects with the DOT Self-Piercing Grommet with Grip Tooth Washer #1 (20007SP15000TXC) Brass 5/16 Inch 500 pack. This self-piercing grommet features a brass construction and includes a grip tooth washer for secure fastening in fabric, canvas, tarps, and more. Designed for reinforced holes, it installs easily without pre-punching and fits standard grommet setting tools. The corrosion-resistant finish ensures reliable performance in harsh conditions, making it ideal for marine and outdoor settings. Each pack contains 500 pieces for consistent sizing and uniform results, providing a durable fastener solution for both indoor and outdoor use.