Flat Washers Zinc Plated 3/8. 150PK are indispensable hardware components suitable for diverse applications. With a 3/8-inch inner diameter, they accommodate 3/8-inch bolts or screws, ensuring compatibility with various fasteners. These washers feature zinc plating for exceptional corrosion resistance and a polished appearance. Versatile and durable, they efficiently distribute the load of fasteners, preventing material damage.