A clamp assembly for securing a conduit to a strut, the clamp assembly includes a pair of brackets, each bracket having a head section and a tail section. The respective tail sections of the pair of brackets being configured to be received within the strut and the pair of brackets having respective apertures formed in the respective head sections thereof. A bolt has a shank that is configured to be received within the respective apertures of the pair of brackets. A nut has a bore therein, the bore is configured to receive the shank of the bolt. Each of the respective apertures includes a pair of opposite, rounded surfaces spaced from each other and connected by a pair of opposite, elongated surfaces.