The spring takes up the extra space inside the channel, keeping the nut flush against the inturned edges of the channel, so you don’t need an extra hand to hold it in place, while you’re busy trying to affix parts and tighten them down. The length of the spring helps determine which channel profiles the spring nut can be used in: longer springs for deeper channels and shorter for shallow channels.

Channel nuts, including spring nuts, typically have a threaded hole in the middle which is used to attach fittings to the strut. Unistrut nuts are available with a variety of hole sizes, to accept a range of hex head cap screw (hex bolt) sizes. There are even spring nuts with bolts built in; these are called stud nuts, and they can make the assembly process very quick and efficient.

Spring nuts are one-piece, self-locking nuts that secure screws in strut channels. They consist of a nut with grooves on the side that fit over the side of the channel edge, a spring to hold the nut in place during installation, and a threaded screw hole.

Spring nuts are one-piece, self-locking nuts that secure screws and prevent them from loosening due to vibration. Long spring channel nuts are used to secure screws in framing channels, cable management conduits, and ducting systems.

Strut channel nuts are used to place and secure fittings, electrical panels, junction boxes, or piping clamps within channels or conduits. They consist of a nut with grooves on the side that fit over the side of the channel edge and a screw hole. Tightening a screw in the nut causes teeth in the grooves to lock into the channel edge, holding the nut in place.

A 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.
316 stainless steel nuts have excellent resistance to chemicals and salt water.