Flat steel hinges come in two styles, strap and Tee, and are graded lightweight, heavyweight and extra heavyweight. The latter types are available in larger sizes, but are also made of thicker metal for greater strength and durability when they're the same size as a lighter weight hinge. S. Parker's 18200 series of lightweight strap hinges are zinc plated, and carded complete with screws, one pair to a card. The hinges are available in 2", 3", 4", 5" and 6" sizes.

The S. Parker zinc plated, heavyweight strap hinges are boxed, without screws, and come in sizes 4", 5", 6", 8" and 10".