Another type of hardware included in the kit is the T-Slot Screw (REV-41-1167). These screws have a T-shaped head allowing them to drop in the slots of the Extrusion or C Channel. This allows for modification of an existing design by adding in brackets and structure without needing access to the end of a slot.
Material: Corrosion resistant zinc plated steel
Simply drop the t-slot screws into the channel where you want them to go and attach the brackets or structures you want and tighten until snug.