These genuine UNISTRUT Brand Long Spring Channel Nuts are vital to the channel support system. They are inserted through the open side of the channel then rotated through 90o where their toothed grooves fit against the return flange of the channel. 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. Unistrut Channel Nut, M10, Nut Base Dimensions 35 x 19 x 8mm, Steel, 0.04kg. What are channel nuts? Channel nuts are used with channel support systems. The grooves along the edges act as small teeth that can lock onto the channel when tightened.