For those trailer sailors out there who are sick and tired of getting out your flathead screwdriver to mount and dismount your windex from the top of the mast every time you setup and takedown I've found a great solution.
https://www.amazon.com/Screw-Stainless-Butterfly-Screws-M6-1-0x16mm/dp/B08GFLY8JG/ref=sr_1_4?dchild=1&keywords=m6+wing+screw&qid=1630617637&s=industrial&sr=1-4
You can source wherever, but a stainless M6 wing screw with the end of the threads ground to a point works great to replace the set screw that comes standard on the windex. And the plastic mount is tapped with a tight thread fit so it holds the screw snugly for transport, I don't think it would ever vibrate out. Mine didn't on a 260 mile round trip