Cross Recess Countersunk Head 8-Rib Self-Drilling Screw 8-18x20-35 Z/Y

Product Features
Self-drilling and self-tapping in one step: Equipped with a quenched drill point tip, capable of directly penetrating thin sheets without pre-drilling, completing drilling, tapping, and fastening in a single operation, greatly improving construction efficiency and saving labor costs.
Countersunk design for a flush surface: The tapered cross recess countersunk head can be fully embedded into the workpiece surface, leaving no protrusion after installation, ensuring aesthetics and avoiding interference with subsequent processes or usage scenarios caused by protruding screws.
8-rib reinforcement for anti-loosening and anti-slip: The eight reinforcing cutting ribs beneath the head effectively increase engagement with the panel, preventing slipping and misalignment during installation, and enhancing connection stability and reliability.
Color zinc coating for rust resistance and durability: The surface color zinc passivation treatment provides excellent neutral salt spray performance, effectively resisting corrosion in ordinary environments, extending the product's service life, and adapting to various indoor and outdoor scenarios.
Complete specifications for wide application: 8-18 thread type combined with a length range of 20-35mm allows flexible selection based on different panel thicknesses to meet various connection requirements.