The Ontario Building Code | Screws, Bolts, Nuts and Washers

7.2.10.2. Screws, Bolts, Nuts and Washers

(1) Every screw, bolt, nut and washer shall be of materials that are resistant to corrosion, when used,

(a) to connect a water closet to a water closet flange,

(b) to anchor the water closet flange to the floor,

(c) to anchor the water closet to the floor, or

(d) to hold cleanoutcovers or floor drain grates.