S-90640A400 1 1/8"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with a nylon insert that maintains locking force in high-motion environments
• Durable corrosion protection from zinc plating, extending service life in industrial settings
• Reliable thread engagement with Class 2B thread fit, ensuring consistent fastening and reducing assembly errors
• High-temperature tolerance up to 220°F, suitable for applications with moderate thermal exposure
• Easy installation and removal using standard external hex drive tools, saving time and labor costs
• Broad compatibility with UNC coarse threads, ideal for general-purpose and heavy-duty assemblies
• Compliance with environmental standards including RoHS 3 and REACH, supporting sustainable procurement

Professional Applications & Engineering Value

This 1 1/8"-7 UNC nylon insert locknut is engineered to address common industrial challenges like vibration-induced loosening and corrosion in machinery, automotive, and structural applications. The zinc-plated steel construction provides a robust barrier against moisture and chemicals, while the nylon insert deforms elastically to lock threads securely without damaging mating components. Its coarse thread design and Class 2B thread fit facilitate quick assembly in rugged environments, reducing maintenance downtime. Ideal for equipment subjected to dynamic loads, this locknut ensures long-term reliability and safety, meeting the demands of heavy-duty industrial and construction projects.

Specification Summary & Compliance

This locknut features precise UNC coarse threads with Class 2B thread fit for consistent performance, and it adheres to industry standards for dimensional accuracy. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it ensures environmental safety and regulatory alignment in global supply chains.