A window screw is a type of fastener characterized by a helical ridge, known as an external thread or just thread, wrapped around a cylinder, which is same as other screws. Some screw threads are designed to mate with a complementary thread, known as an internal thread, often in the form of a nut or an object that has the internal thread formed into it. Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted. The most common uses of screws are to hold objects together and to position objects.
General Applications of window screws
• Door frame fixing
• Window frame fixing
• Wooden frame fixing
• For installation in solid and hollow materials such as concrete, lightweight and aerated concrete, hollow-core-concrete slabs, natural stone, solid and hollow brick, (perforated) sand-limestone and wood
• Stone facade reinforcement
• General fixing of wood / metal, etc.