S-90543A110 M5 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through innovative Spring-Stop locking technology that maintains clamp load in high-stress environments
• Excellent corrosion protection with 18-8 stainless steel construction, ideal for harsh industrial and outdoor applications
• Precise thread engagement with Class 6H thread fit ensuring reliable, consistent performance in metric assemblies
• Quick installation efficiency with coarse 0.8mm pitch and standard external hex drive for faster assembly times
• Environmental compliance assurance meeting both RoHS 3 and REACH standards for global manufacturing applications
• Durable mechanical performance with standard hex nut profile providing reliable torque transmission and reusability
• Versatile metric compatibility with M5 thread size suitable for various industrial equipment and machinery applications

Professional Applications & Engineering Value

This M5 spring-stop locknut delivers critical vibration resistance in demanding mechanical systems where loosening under dynamic loads can compromise safety and performance. The 18-8 stainless steel construction provides essential corrosion resistance for applications exposed to moisture, chemicals, or outdoor elements, while the external hex drive enables efficient installation in confined spaces common to industrial machinery, automotive assemblies, and electrical enclosures. The Class 6H thread fit ensures precise mating with compatible fasteners, maintaining structural integrity in vibration-prone equipment such as motors, conveyors, and power transmission systems. This metric locknut solves the persistent challenge of maintaining bolt preload in applications subject to continuous vibration or thermal cycling.

Specification Summary & Compliance

This M5x0.8mm locknut features Class 6H thread fit per ISO metric standards with coarse thread spacing for reliable engagement. The external hex drive measures 8mm across flats with a 4.8mm height profile. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance compliance. The spring-stop locking mechanism provides consistent performance across multiple installation cycles while maintaining specified torque values.