https://www.canadiantire.ca/en/pdp/hillman-hex-flange-nuts-enlarged-circular-base-assorted-sizes-1619346p.html
Hillman Hex Flange Nuts, Enlarged Circular Base, Assorted Sizes | Canadian Tire
These hex flange nuts will strengthen any project with their enlarged circular base, providing stability and tension for wood and metal applications. Available...
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https://www.tesco.com/shop/en-GB/products/325100085
Olive Fireside Companion Set Tool Stand Circular Base Black Matte Finish - Tesco Groceries