McNICHOLS® Quality Stair Treads When strength and safety are paramount, in addition to load bearing capabilities, open area, and easy maintenance, McNICHOLS ® Quality Stair Treads are the product of choice. “Bar” or formed “Plank” Grating style treads are suitable for any type of stairway application. Our inventory offers you many options for your projects, and we are happy to handle special orders for other styles or treads made from fiberglass or stainless steel as well. Treads are available from stock in an array of materials such as: steel, aluminum, plain steel, and galvanized steel. Most bar styles of treads are available with a choice of nosing options depending on the material. Plank treads may or may not have nosing or may have an integral nosing, depending on the style selected.