Help preserve your traffic sign’s high-visibility finish with Nylon washers. These washers keep bolts that get hot in the sun off of the face of the sign, preventing melting and retaining uninterrupted reflectivity. They’re lightweight, non-magnetic, non-corrosive, non-toxic, non-flammable, non-abrasive, non-conductive, and heat resistant! Preferred for applications where high tensile material is not required. Inner Diameter: 5/16” Outer Diameter: ¾”. Thickness: 1/16”. Looking for something else? Find more of the best hardware and accessories for all of your safety and traffic signs at 95TSS.