S-95615A350 1 1/4"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through durable nylon insert that maintains locking force in high-stress environments
• Heavy-duty performance with Grade 5 strength classification for demanding industrial applications
• Corrosion protection provided by zinc plating for extended service life in harsh conditions
• High-temperature capability with nylon insert rated up to 220°F (104°C) for thermal stability
• Reliable thread engagement with Class 2B thread fit ensuring consistent installation and removal
• Easy installation and removal using standard external hex drive with familiar wrench sizes
• Environmental compliance meeting both REACH and RoHS 3 standards for industrial safety

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel nylon insert locknut delivers exceptional vibration resistance for heavy machinery, automotive assemblies, and industrial equipment where constant motion threatens fastener integrity. The coarse UNC threads (1 1/4"-7) provide rapid installation while the nylon insert creates consistent friction that prevents loosening under extreme conditions. Engineered with Class 2B thread fit, this external hex locknut ensures precise engagement without galling or cross-threading, reducing maintenance downtime. The 220°F temperature rating makes it suitable for engine compartments, manufacturing equipment, and outdoor applications where thermal cycling occurs. Its zinc-plated steel construction offers corrosion resistance while maintaining the Grade 5 strength required for structural and safety-critical applications.

Specification Summary & Compliance

This heavy-duty locknut features 1 1/4"-7 UNC coarse threads with Class 2B thread fit for consistent engagement and right-hand threading direction. Manufactured to Grade 5 strength standards with standard hex profile (1 13/16" width) and external drive style. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use in industrial applications worldwide.