A fitting for connecting first and second pieces of strut to one another includes a coupling component. The coupling component has first and second coupling portions configured for reception in respective fitting grooves of the first and second pieces of strut when the coupling component is in a first orientation. Each of the coupling portions are rotatable within the respective fitting grooves from the first orientation to a second orientation to connect the first and second pieces of strut to one another. An anti-rotation plate is connected to the coupling component. The anti-rotation plate has an unlocked position relative to the coupling component to allow the first and second coupling portions to be received in the respective fitting grooves, and a locked position relative to the coupling component to inhibit rotation of each of the first and second coupling portions from the second orientation to the first orientation.