Quick view #6, ID=0.147", OD=0.312", THK=0.025" 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): #6Inside Diameter (Nominal): 0.147"Outside Diameter (Nominal): 0... $38.82 Compare