3/8" lock washer locking split BLACK OXIDE .385" ID x 680" OD x .094" thick
You will get 4 brand new 3/8" split washers as pictured. These are 18/8 stainless steel that are Black Oxide coated, correct for Antique Motorcycle and Auto restoration.
For a 3/8" screw, .385" ID x 680" OD x .094" thick