3/16" Steel Plate, Disc Shaped, 7" Diameter, .1875 A36 Steel, Round, Circle $6.0 Brand Synergy Steel Designs Country/Region of Manufacture United States condition New I am selling 3/16'' Steel Discs that are 7.00'' in diameter. A36 or better steel. Some pieces may be 7ga steel, which is about .179'' thick.Check out my other auctions - I can cut all sizes, shapes, and thickness of steel if needed. I would be happy to give you a quote. Please ask if you have any questions at all!