Tornillos -Autorroscantes -340 piezas -M3 M3.5 M4 M4.8 -Acero al carbono -Negro -Cabeza Phillips -Con caja de juego

Self-tapping screws are made of carbon steel, which has a higher density and better stability. Suitable for outdoor or humid environments, they also possess strong corrosion and acid resistance. Product features: Cross-head groove design for easy and quick installation and stronger load-bearing capacity. Self-tapping screws with drill bits can be directly drilled into metal surfaces without pre-drilling. Smooth, sharp, and strong threads distribute force evenly without slippage or deformation. Applications: Self-tapping screws have a wide range of uses, suitable for fastening connections in wood, thin metals, plastics, and other materials; widely used in construction, engineering, manufacturing, assembly, and other industries. Product packaging: 340 self-tapping screws in a plastic box for easy access and convenient use.