S-90715A220 1 1/2"-6 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through durable nylon insert that maintains locking performance in high-vibration environments
• Excellent corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine applications
• Reliable high-temperature performance with nylon insert rated for continuous service up to 220°F
• Quick installation and removal with standard external hex drive design for easy tool access
• Precise thread engagement with Class 2B thread fit ensuring consistent, reliable fastening performance
• Industry-standard compatibility with UNC coarse threads matching common bolt specifications
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This 316 stainless steel nylon insert locknut delivers exceptional engineering value in demanding applications where vibration loosening poses significant reliability concerns. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing spontaneous loosening in machinery, heavy equipment, and structural assemblies. The UNC coarse thread profile combined with Class 2B thread fit ensures rapid installation and reliable performance in industrial fastening systems. The 316 stainless steel material provides superior corrosion resistance compared to standard stainless grades, making it ideal for chemical processing, marine environments, and outdoor applications. With its external hex drive style and standard profile, this locknut offers compatibility with common tools while maintaining secure locking performance up to 220°F, addressing critical thermal stability requirements in engine components, pump systems, and industrial machinery.

Specification Summary & Compliance

This heavy-duty locknut features precision 1 1/2"-6 UNC coarse threads with Class 2B thread fit tolerances for consistent engagement and reliable performance. The right-hand threading follows industry-standard specifications for compatibility with common fastener systems. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring environmental responsibility and regulatory acceptance for industrial applications worldwide. The inch system measurement provides straightforward integration with existing North American industrial standards and specifications.