COMBINATION DESIGN combines internal and external toothed lock washers for enhanced effectiveness. VIBRATION RESISTANT with dual teeth for superior holding power in vibration-prone environments. IDEAL FOR GROUNDING APPLICATIONS with teeth ensuring a secure grip on fasteners and base materials. WEATHER RESISTANT due to zinc plating that resists corrosion.

Bolt Size: 1/4” (6.35mm), Washer O.D: 23/32” (18.25mm)