DOT Durable Hard Action Socket 93-XX-10224-1A is a 100 pack of nickel-plated brass snap fasteners designed for heavy-duty use in outdoor and marine environments. These hard snap action sockets provide a secure grip and consistent snap performance, making them ideal for applications including marine canvas, boat covers, upholstery, tents, awnings, umbrellas, gear bags, and luggage. Built with corrosion-resistant, non-ferrous metals, they offer durability and resilience against rust and tough conditions while meeting military specification NASM27980. Their self-piercing capability and long-lasting performance ensure reliable holding power for outdoor upholstery and heavy-duty projects.