Known for their strength, these alloy steel screws are coated to provide corrosion resistance in wet environments.

One-third the weight of steel, aluminum screws resist corrosion in wet environments.

The green color identifies these as grounding screws. They have a flange that provides a wide flat surface for making solid electrical connections.

These metric screws have a triangular shank that presses tightly as it forms threads, so screws resist loosening in soft metals such as brass, aluminum, and copper.