S-90543A130 M8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through innovative Spring-Stop locking technology that maintains clamp load under extreme conditions
• Exceptional corrosion resistance with 18-8 Stainless Steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 6H thread fit ensuring consistent performance and reduced risk of cross-threading
• Optimal torque transmission via standard 13mm external hex design for secure installation with common tools
• Enhanced durability with coarse thread pitch (M8x1.25mm) providing stronger holding power in demanding applications
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use across global industrial markets
• Space-efficient design with 7.2mm profile height allowing installation in confined spaces without compromising strength

Professional Applications & Engineering Value

This M8 Spring-Stop locknut addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural frameworks. The 18-8 Stainless Steel composition provides inherent corrosion resistance, eliminating galvanic concerns in mixed-material applications while maintaining mechanical integrity. The Spring-Stop locking mechanism creates continuous radial pressure against mating threads, delivering reliable performance where conventional nuts fail. With Class 6H thread tolerance and coarse thread spacing, this metric hex nut ensures rapid installation and consistent clamp force retention in high-vibration environments, reducing maintenance frequency and preventing equipment downtime across manufacturing, transportation, and heavy equipment sectors.

Specification Summary & Compliance

This M8 x 1.25mm locknut features Class 6H thread fit per ISO metric standards with coarse thread spacing for optimal engagement. The external hex drive (13mm width, 7.2mm height) conforms to standard wrench sizes. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency. The Spring-Stop locking design maintains consistent performance across temperature variations and dynamic loading conditions.