DOT Rolled Rim Grommet with Spur Washer #3 in government black brass combines strength and corrosion resistance for reliable hole reinforcement. Designed with rolled rim construction and interlocking teeth on the spur washer, this heavy-duty grommet delivers a secure grip that prevents tearing in thick or heavy materials. Sized at 15/32 inch hole diameter, this pack of 1 gross (144 sets) is ideal for marine and outdoor use, supporting fabrics in tarps, tents, awnings, banners, and curtains. Its durable black finish and brass material provide both industrial-grade performance and protection against outdoor elements, making it a practical choice for upgrading patio and outdoor decor hardware with lasting stability.