Upholstered Q headboard -hardware (Arnold)

This is an upholstered, tufted headboard. The material is sort of a light brown flax color.
It’s in good structural condition, but it is missing and necessary hardware in order to attach it to a bedframe. It’s not that difficult to rig up a system to attach it to a bedframe. I’m attaching a photo of the one remaining piece of hardware that I used. You’ll need four medium bolts as well.