Composite concrete wall form unit with a special transition bolt

In a concrete wall form, a composite fill-in panel unit comprising three rectangular upstanding metal-clad panels arranged in edge-to-edge relationship and including a medial panel and a pair of outside panels, each of said panels embodying a rectangular facing and a rectangular reinforcing frame including opposed parallel vertical side rails, the side rails of said panels being provided with vertically spaced pairs of opposed bolt-receiving openings at different horizontal levels, the side rails of adjacent panels abutting each other, fastening bolts projecting through registering openings in the side rails of abutting panels, and reaction members associated with said fastening bolts for drawing such abutting panels hard against each other, the facings of said outside panels being embodied in a single continuous sheet which bridges the facing of the medial panel and lies flat against the same in face-to-face coextensive relationship and constitutes, in effect, a common and complete facing for the three panels.