Material: Carbon Steel
Blackened Carbon Steel Hex Head Self-Drilling Screw – Treated with high-temperature blackening, featuring a matte rust-resistant surface that is wear-resistant and non-slip. Offers high overall strength, good toughness, and strong fatigue resistance. The black finish provides a simple industrial look. Suitable for machinery manufacturing, hardware equipment, indoor heavy steel structures, light-sensitive equipment fastening, and other industrial applications where practicality is key.