Quick view 3/8" Flat Washers, Aluminum Alloy 2024-T4 Aluminum: light weight, corrosion resistant and has excellent electrical and thermal conductivity.The nominal diameter is the bolt size to use for this flat washer.Diameter (Nominal): 3/8"Inside Diameter (Nominal): 13/32"Outside Diameter (Nominal):... $1,055.68 Select Quantity Compare