Newport Fasteners 7/16 inch ID Stainless Steel 18-8 Flat Washers (Quantity: 500) - 7/16 Inch Inside Diameter x 3/4 Inch Outside Diameter x 0.062 Inch Thickness - an Spec Machine Bushing Washers: Amazon.com: Industrial & Scientific
Plastic Bushings & Washers | Plastic Machining Company