Back Home / Fasteners / Washers / LOCK WASHER SPLIT USS ZINC #12 GR 5 LOCK WASHER SPLIT USS ZINC #12 GR 5 SKU: LW12 Categories: Fasteners, Washers A coiled, hardened split circular washer with a slightly trapezoidal wire section. Applies greater bolt tension per unit of applied torque. Provides a hardened bearing surface and more uniform load distribution. Steel, zinc plated. Resists loosening caused by vibration and corrosion. Designed for use with grade 5 bolts. Rockwell Hardness: C38-46 Inside Diameter: Min .220 Max .227 Outside Diameter: 0.377 Case Quantity: 100 Log In For Pricing