Carbon Steel Screws

Carbon steel screws are made from raw materials that can be categorized into low-carbon steel, medium-carbon steel (alloy steel), and high-carbon steel based on their carbon content. Higher carbon content generally results in higher strength but lower toughness.

Carbon steel is one of the most commonly used screw materials. Depending on the application environment, products may require hardening treatment, with common grades including 4.8, 8.8, 10.9, and 12.9. Higher grades indicate greater strength. In practical applications, surface treatment is necessary for use in ordinary environments.