There's no need for additional fasteners with these nuts—they combine a strut channel nut with a spring and a threaded stud. The spring plus serrated grooves that grip the lip of the channel provide a more secure hold than standard strut channel nuts.

Zinc-plated steel nuts are corrosion resistant in wet environments. 304 stainless steel nuts are more corrosion resistant than zinc-plated steel nuts. They also have good chemical resistance.