This wing screw is a plastic screw with a rounded shape and is fully threaded. Wing screws are a German shape similar to DIN 316. They are designed to be tightened and loosened by hand.
Also known as wing screws, they allow quick assembly and disassembly by hand, without special tools.
Because thumbscrews typically provide a large gripping surface, they provide great leverage for tightening.
Thanks to a good grip, this screw can be used in many assemblies.