Solutions for non penetrating attachment of snow rail, signs, solar energy fixtures and HVAC equipment to standing seam concealed fastener panel metal roofing systems. S-5!® clamps attach to the panel seam by the tightening of two “bullet-nosed” stainless steel setscrews against the standing seam metal roofing seam material. The setscrews compress the seam material against the opposite wall of the clamp. They will “dimple” the seam material, but will not penetrate it. Threaded holes in the clamp (and stainless hardware provided) enable the easy attachment of various ancillary items to the clamps.