Engineered with 304 stainless steel and shaking resistant disk spring design, these single sided serrated washers deliver anti loosening for automotive, machinery, and industrial applications The erosion resistant stainless steel construction combines a domed profile with accuracy stamped teeth to double action locking force while rust in harsh environments Perfectly suited for engine components, marine hardware installations, outdoor furniture assembly, and industrial machinery maintenance where shaking resistance and durability are critical These versatile locking washers general compatibility with standard bolts / nut while meeting standards through stainless steel construction a sustainable upgrade from replaceable fasteners Ideal for mechanics, construction professional, and enthusiasts requiring secure fastening solution for high shaking equipment, outdoor structures, or frequent assembly furniture projects, Manufacturer: Tsophreniq