The S-5-Z clamp is specially developed to fit profiles having a round bulb seam configuration.
Its two-piece design allows it to be easily installed anywhere along the length of the rib.
The S-5-Z clamp comes complete with two  3/8″x24 x 0.80″ round nose set screws and one  M8-1.25 x 16mm Hex Flange Bolt. All hardware is stainless steel.
The insert is aluminum.
Installing solar, satellite dishes, signs or other less demanding roof top mounted products? The S-5-Z mini clamps maybe a better choice.