M2/M3/M4 Grade 4.8 Galvanized Cross Groove Large Flat Head Self-Tapping Screw Mushroom Head Self-Tapping Screw Umbrella Head Screw for Woodworking & Assembly

Our 4.8 Grade Galvanized Cross Groove Self-Tapping Screws are professional fasteners designed for reliable and long-lasting use in various scenarios. Crafted with high-quality carbon steel, each screw features a 4.8 grade strength rating—ensuring excellent load-bearing capacity and resistance to deformation, making them suitable for both light and medium-duty fastening needs.

 

The galvanized finish provides superior corrosion resistance, effectively preventing rust and wear even in humid or semi-outdoor environments, extending the service life of the screws. The cross groove design allows for easy installation with standard screwdrivers, while the large flat head (mushroom/umbrella head) ensures a flush, neat fit when installed, avoiding protrusions that could cause scratches or interference.

 

Available in M2, M3, and M4 sizes, these self-tapping screws are highly versatile. They are ideal for woodworking projects (e.g., furniture assembly, cabinet installation), household repairs (fixing fixtures, decorative panels), light construction (small wooden structures), and DIY crafting (handmade decorations, small wooden works). Each screw undergoes strict quality inspection to ensure precise thread accuracy and consistent performance, making them a practical choice for both professional use and home DIY.