Common Sense Washer 91-BS-78510--1C Government Black Brass 100 pack offers durable and rust-resistant brass washers with a sleek black finish designed for secure fastening through multiple layers of fabric and materials. Ideal for outdoor use, these washers provide strong holding capability in heavy-duty applications such as awning installations, marine canvas, signage, and fabric fastening. Compatible with turn button fasteners, grommets, and back plates, they ensure longevity and strength in both industrial and commercial settings while maintaining a clean, government black appearance suitable for a variety of coated and woven fabrics. This 100 pack supports reinforced vinyl, polyester, olefin, Teflon and PVC coated materials, making it a versatile choice for outdoor living projects that require reliable and robust hardware.