A4 M16 Stover Lock Nut DIN 980 (A4-80) is a high-strength stainless steel nut designed for secure fastening in heavy-duty applications. Featuring a prevailing torque design, it resists loosening under vibration and dynamic loads, making it ideal for structural and mechanical engineering projects. Manufactured from 316 stainless steel with A4-80 classification, it offers superior corrosion resistance, particularly in marine and industrial environments. The Stover lock mechanism ensures a tight grip without requiring additional locking elements. Suitable for use in automotive, construction, and machinery applications, this nut meets DIN 980 specifications, guaranteeing reliability and long-term performance in demanding conditions.