If your display items are tall and thin, maybe a 2-Piece Quiver is a solution. This one is Do-It-Yourself from PVC Pipe and PVC Coupling as base. The distance between top and base is up to you and your merchandise. If you inverted the Coupling and Capped the end, the base too could attach and float at any height. And use is not limited to Hardware. How about arrows in sporting goods?
For all Quiver-like fixture designs see…
“Drum Stick Displayed En Masse”
“2-Pc Quiver for Tall, Thin Items” (This Post)
“Cup Holder or Quiver for Grid?”
“Old Navy Balloons Just For Fun”
“Quiver for PowerWing Cross Sell”
“Gift Wrap Quiver is Square”
“Shelf-Edge Quiver for Dowels”
“Shelf-Edge Gift Wrap Quivers”
“Gondola-Upright Micro Quiver”
“Magnet Mount Micro Quiver”
“PVC Pallet Rack Quiver is DIY“
“PVC Quivers for Retail.