6 METAL ROLL FORMED BUILDING MATERIALS, NAMELY STEEL STUDS, TRACK, FURRING, CHANNELS AND JOISTS; METAL FASTENERS, NAMELY DRY WALL NAILS AND SCREWS, BUILDING SCREWS, CONCRETE ANCHORS, AND PINS AND FASTENERS USED IN POWER ACTUATED TOOLS
THE PICTORIAL REPRESENTATION OF A DRY WALL SCREW THE MARK CONSISTS OF A PICTORIAL REPRESENTATION OF A DRY WALL SCREW AND A HIGHLY STYLIZED END VIEW OF A STEEL STUD.