Conquest 5/8" Split Lock Washer - Plain Finish | Qty. 1,800 (Carton)Conquest Split Lock Washers with a plain finish are engineered to keep fasteners from working loose under load and vibration. These helical spring style washers bite into both the underside of the bolt head and the surface its securing, maintaining tension that helps resist loosening over time. These washers are commonly used in applications where constant motion, heat cycles, or heavy equipment can cause fasteners to back off. Theyre ideal for