Quick view #2, ID=0.099", OD=0.187", THK=0.02" Flat Washers, Brass Brass: machinable, ductile, corrosion resistant, excellent electrical and thermal conductivity.The nominal diameter is the bolt size to use for this flat washer.Diameter (Nominal): #2Inside Diameter (Nominal): 0.099"Outside Diameter (Nominal): 0... $25.11 Compare