A thumb screw (also commonly referred to as a wing screw or hand screw) is a type of fastener designed to be tightened or loosened manually, without the need for tools such as screwdrivers, wrenches, or pliers. It typically features a large, knurled, or wing-shaped head that provides sufficient grip for fingers to turn it easily.
A thumb screw is without the need for tools to tightened or loosened screw. it is two parts ，one is plastic head,another is metal screw（carbon steel or Stainless steel）.
Common applications: Used in situations where frequent adjustments or removals are needed, such as in laboratory equipment, camera mounts, furniture, or machinery access panels.
In summary, a thumb screw is a manually operable fastener intended for tool-free installation and adjustment, prioritizing convenience and accessibility over high torque capacity.
