Plastic expansion tube screw is a tool used to fix objects, usually composed of plastic expansion tube and screw, and is widely used in the fixation of light walls such as gypsum board and wood board. Its main function is to provide additional fixing force through the expansion of the expansion tube, thereby ensuring the firmness of the object.
Structure and design
Plastic expansion tube screws usually include a screw and an expansion tube. The expansion tube is usually cylindrical or inverted triangular, with a small hole at the bottom for inserting the screw, and multiple small holes on both sides or on the top of the expansion tube for increasing the fixing force after expansion
. The screw head is usually designed to be conical or flat and round, which is convenient for inserting the expansion tube
.