Everbilt 3/8 in. Zinc-Plated Flat Washer (25-Pack) 802324 - The Home Depot
8 Triple Wave Washer 0.190-0.200 ID 0.240-0.250 OD 0.006 Thk 18-8 SS USA - AMPG - Shoulder Screws, Shoulder Bolts, Sex Bolts, Flat Washers, Machine Screws and other fasteners
For Screw Size 3/8 in, Stainless Steel, Wave Washer - 5CVH6|WA3W35152031P-PK2500 - Grainger
Everbilt 3/8 in. Zinc-Plated Flat Washer (25-Pack) 802324 - The Home Depot
Wave Washers | MISUMI | MISUMI
File:Wave washer 22mm-43mm 2016-03-03.jpg - Wikipedia
A367780MSC : Made in USA 3/8 - 7/16 Inch Screw, 0.02 Inch Thick, Grade 17-7 PH-A, Stainless Steel Triple Wave Washer,