Lechi International Co.,Ltd

Made from high-quality medium carbon steel or alloy steel, cold-forged and rigorously heat-treated to achieve strength levels 6, 8, or 10, meeting the requirements of heavy-duty and frequent vibration conditions. The surface is electro-galvanized, with strong zinc adhesion and a neutral salt spray test resistance of ≥72 hours, providing both rust prevention and electrical conductivity. Precision thread tolerances meet 6H standards, ensuring smooth fit and stable tightening torque. Suitable for indoor industrial environments such as machinery, automotive parts, industrial electrical systems, and assembly lines. Can be manufactured according to DIN/ISO/ANSI standards, offering white zinc, blue-white zinc, and yellow zinc plating. Export quality in bulk; can be supplied as a complete set with washers and bolts.