Regular: A coiled, hardened, split circular washer with a slightly trapezoidal wire section. (A) Applies greater bolt tension per unit of applied torque; (B) Provides a hardened bearing surface, creating more uniform torque control; (C) Provides more uniform load distribution; (D) Resists loosening caused by vibration and corrosion; (E) Is preferred lockwasher for use with hardened bearing surfaces.
High-Alloy: Dimensionally identical to a regular split lock washer but made from 4037 alloy steel (sizes over 1 » are equivalent to heavy split lockwashers in size and material). Designed for use with Grade-5 & Grade-8 bolts and nuts.
Stainless: A regular split lock washer made from austentic stainless steel. For use with stainless nuts and screws of a similar stainless alloy in corrosive environments.