S-90045A111 M4 DIN 980, ISO 7042 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top lock distorted thread design that maintains secure fastening in high-stress environments
• Excellent corrosion resistance provided by 18-8 stainless steel construction for extended service life in harsh conditions
• Precise thread engagement with Class 6H thread fit ensuring reliable performance and consistent locking force
• Industry-standard compliance meeting DIN 980 and ISO 7042 specifications for guaranteed quality and interchangeability
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Environmental compliance with RoHS 3 and REACH regulations for safe use in industrial applications
• Optimized coarse thread pitch (0.7mm) providing quick assembly while maintaining strong locking capabilities

Professional Applications & Engineering Value

This M4 metric locknut with distorted thread technology addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and electrical enclosures. The 18-8 stainless steel construction delivers exceptional corrosion resistance, making it ideal for outdoor applications, marine environments, and chemical processing equipment where moisture and corrosive elements are present. The top lock design creates consistent friction along the thread engagement, ensuring maintained clamp load without requiring additional locking devices. Engineered to DIN 980 and ISO 7042 standards, this external hex locknut provides reliable performance in high-cycle applications while the Class 6H thread fit guarantees precise mating with corresponding bolts for optimal load distribution.

Specification Summary & Compliance

This M4 x 0.7mm locknut features Class 6H thread tolerance with coarse thread spacing and right-hand thread direction. Manufactured in compliance with DIN 980 and ISO 7042 specifications for dimensional accuracy and performance requirements. The product is certified RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental and safety regulations for industrial components. The standard hex profile (7mm width, 3.2mm height) ensures compatibility with metric tooling systems.