The FLAT WASHER USS ZINC 3/8" THRU HARDENED is engineered for superior stress distribution, making it ideal for use in automotive and industrial assemblies. Crafted from hardened steel and coated with zinc for corrosion resistance, this washer ensures reliability and longevity in demanding environments. Its 3/8" diameter allows compatibility with a wide range of fasteners, making it a versatile choice for both OEM and aftermarket applications. Perfect for enhancing the integrity of your connections while reducing wear and tear.