A tube and clamp scaffold estimate starts with the approved layout, then counts every tube, coupler, platform and base component needed to build it. A list of vertical tubes and right-angle clamps alone will miss diagonal bracing, sleeve joints, access, edge protection and replacement stock. The quantities also depend on bay geometry, lifts, ties, working-platform levels and the intended loads. A supplier can quote an itemised bill of materials, but the purchase list should not be mistaken for an engineered scaffold design. This article gives seven RFQ line-item groups for contractors and distributors preparing a tube-and-coupler order. It shows which dimensions to provide, where different coupler types belong and why a 40HQ shipping estimate must be based on the final mix of long tubes and boxed fittings.