DOT self-piercing rolled rim grommets with spur washers in stainless steel deliver strong, corrosion-resistant reinforcement without needing pre-punched holes. The rolled rim increases durability, while interlocking teeth on the spur washer ensure a secure grip for heavy-duty applications. Sized at 1/2 inch (#4), this 1 gross pack of metal grommets is ideal for industrial, marine, and outdoor projects like banners, tarps, and patio decor enhancements. Compatible with both hand and machine installation, these fabric fasteners offer precise, long-lasting performance that withstands harsh environments.