1/4-20, 9/32 ID Flat Washer Zinc Plated - QTY:1000 - 9GV86
All washers are not the same! Most of the hardware store washers are so thin that they seem more decorative than functional. These are genuine SAE flat washers. 9/32" ID x 5/8" OD. Thickness between .051" and .080". Made in Taiwan.