S-90630A219 2"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert technology that maintains secure fastening in high-motion environments
• Heavy-duty performance with Grade 8 steel construction providing exceptional strength for demanding industrial applications
• High-temperature capability with nylon insert rated to 220°F, ensuring reliable performance in heated operating conditions
• Precise thread engagement with Class 2B thread fit for smooth installation and consistent clamping force
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Coarse UNC thread design for rapid assembly and reduced cross-threading risks in industrial settings
• Environmental compliance meeting both RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers critical vibration resistance where conventional fasteners fail. The nylon insert locking mechanism creates consistent friction against mating threads, preventing loosening under extreme vibration and dynamic loads common in heavy machinery, automotive assemblies, and industrial equipment. The UNC coarse thread profile (2"-8) enables faster installation in production environments while the external hex drive accommodates standard tools for efficient maintenance. With a temperature rating of 220°F, this locknut maintains integrity in applications where thermal cycling would compromise other locking methods, making it ideal for engine components, power transmission systems, and structural assemblies requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This heavy-duty locknut features precise Class 2B thread fit per UNC standards with right-hand threading and coarse spacing. Manufactured from high-strength Grade 8 steel with standard hex profile measuring 3 9/64" width and 2 13/32" height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.