Carbon steel screws have good strength and durability, made by cold heading process, and are commonly used in various fields such as machinery, construction, automobile, electronics and furniture. Carbon steel screws have high strength, can provide reliable fastening force, and can withstand moderate loads. Its corrosion resistance can be increased by surface treatment, such as galvanized, nickel-plated or coated with anti-corrosion agents. Common carbon steel screw thread types include regular threads (such as metric or imperial threads) and profile threads (such as self-tapping threads).