1/4" Female Thumb Nuts with Rubber Pads, 5pc Thumb Wheel Lock Nut Adapter, Anti-Slip Rubber Washers with 1/4" Screw Hole for Attach The Camera to Tripod

Thanks for all the suggestions. I have my answer: This item is "1/4" Female Thumb Nuts with Rubber Pads, 5pc Thumb Wheel Lock Nut Adapter, Anti-Slip Rubber Washers with 1/4" Screw Hole for Attach The Camera to Tripod" If I thought "nut" rather than "screw" - that would have been the solution. On Amazon https://www.amazon.com/dp/B0B82DDGWS