S-99183A430 M20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision distorted top threads that maintain secure locking even under extreme dynamic loads
• Exceptional corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• High-strength performance meeting Class 10 standards for demanding applications requiring reliable fastening integrity
• Precision fine threading (M20x1.5mm) providing enhanced engagement and superior resistance to loosening
• Easy installation and removal with standard external hex drive compatible with common wrenching tools
• Environmental compliance with RoHS 3 standards, ensuring safe use across regulated industries
• Optimized dimensional stability with Class 6H thread fit guaranteeing consistent performance and interchangeability

Professional Applications & Engineering Value

This Class 10 locknut delivers critical engineering solutions for applications where vibration-induced loosening poses significant safety and performance risks. The top lock distorted thread design creates permanent mechanical interference that eliminates the need for secondary locking devices, reducing assembly time and component count. Manufactured from zinc-plated steel, these metric fine thread locknuts provide exceptional corrosion resistance while maintaining the high tensile strength required for heavy-duty industrial machinery, automotive systems, and vibration-prone equipment. The precise M20x1.5mm fine thread configuration offers increased thread engagement surface area, enhancing load distribution and preventing thread stripping in high-stress applications.

Specification Summary & Compliance

This metric locknut features M20x1.5mm fine threads with Class 6H thread fit tolerance, ensuring precise dimensional accuracy and interchangeability. The external hex drive (30mm width) provides standard tool compatibility, while the 20mm profile offers optimal strength-to-weight ratio. Manufacturing complies with RoHS 3 (2015/863/EU) environmental standards, and the Class 10 strength rating certifies performance under demanding mechanical loads. The top lock distorted thread mechanism meets industry standards for vibration-resistant fastening applications.