Metl-Span V6 X-Span concealed fastener clips are V-shaped fasteners that fit joinery of Metl-Span’s CF insulated metal panels (IMPs). The clips increase panel stiffness and distribute shear loads at fastening locations. The distribution helps delay panel disengagement under negative loads, a failure point of thick panels in long spans. To further delay disengagement and allow for large negative wind loads or longer spans, V6 X-Span clips can be combined with face-to-clip fasteners at end supports. V6 X-Span clips are an alternative to back-fastening and allow installation of long spans without accessing panel interiors. The clips are reversible; they have holes at ends and at centers for intermediate supports.