1/4" flat washer BLACK OXIDE 5/8" ID x 9/32" OD x .050 thick
You will get 4 brand new 1/4" flat washers as pictured. These are 18/8 stainless steel that are Black Oxide coated, correct for Antique Motorcycle and Auto restoration.
For a 1/4" screw, 0.487" OD x .260" ID x .040/.060 thick