The Husqvarna 584953901 Genuine Screw Washer Head 4-Pack offers durable, OEM-quality fasteners designed for secure spindle-to-deck mounting. Made from hardened alloy steel, these self-tapping hex head bolts ensure a tight, reliable fit across various Husqvarna, Craftsman, Poulan, and Weed Eater models. Ideal for repairs or replacements, this 4-pack provides lasting strength and seamless compatibility with a range of outdoor power equipment.