metal building supplies, namely, roof sheathing h-clips, aluminum porch flashing, drip flashing, soffit vents, fabricated metal brackets, angled hangers, floor joist hangers; nails, namely, box nails, galvanized finishing nails, roofing nails, oval head siding nails, bright ring common nails and joist hanger nails; metal fasteners, namely, screws, self-tapping screws, lag bolts, hex bolts, nuts and washers; pre-bent metal roof flashings