3/8" SAE Grade 8 Extra Thick Flat Washers Zinc Yellow
3/8 Component Thick Washer 0.406 ID 0.750 OD 0.089-0.099 Thk 18-8 SS USA - AMPG - Shoulder Screws, Shoulder Bolts, Sex Bolts, Flat Washers, Machine Screws and other fasteners
Paulin 3/8-inch (7/8-inch O.D.) Flat Washer - 18.8 Stainless Steel | The Home Depot Canada
3/8" Extra Thick Flat Washer, 18-8 Stainless Steel, USS - Hi-Line Inc.
3/8" Extra Thick Fender Washer, Zinc Plated, 1.5" O.D. - Hi-Line Inc.