Caterpillar-style premium aftermarket plow bolt. Part reference 1S1859. Size/application: Bolt 3/4-16UNFx55. Corresponding nut reference: 7H3608. Designed for cutting edges, end bits and wear components with the same countersink, diameter and thread. Brand compatibility: Caterpillar and premium aftermarket systems built to the matching Caterpillar specification. Standardized dimensions may also fit other major brands when diameter, thread, length and seat are identical. Confirm bolt length, grip and hole pattern before installation.