S-97135A407 1 1/2"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional durability with Grade 8 strength classification, providing maximum reliability for heavy-duty industrial applications
• Enhanced corrosion protection from zinc yellow-chromate plating that extends service life in demanding conditions
• Reliable performance at elevated temperatures with nylon insert rated for continuous use up to 220°F
• Precise thread engagement with Class 2B thread fit ensuring consistent installation and optimal clamping force
• Easy installation and removal using standard external hex drive compatible with common wrench tools
• Optimized for coarse thread applications with 1 1/2"-8 UNC threading that resists loosening under dynamic loads

Professional Applications & Engineering Value

This Grade 8 nylon insert locknut delivers critical vibration resistance in demanding industrial environments where fastener failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion protection while maintaining the high tensile strength required for heavy machinery, construction equipment, and automotive applications. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing spontaneous loosening from vibration and thermal cycling. With its 220°F temperature rating and UNC coarse threading, this locknut maintains reliable performance in high-temperature environments and high-vibration applications where fine threads might fail. The external hex drive design allows for quick installation using standard tools, reducing assembly time while ensuring secure fastening in critical joints.

Specification Summary & Compliance

This heavy-duty locknut features 1 1/2"-8 UNC coarse threading with Class 2B thread fit for precise dimensional accuracy and reliable engagement. Manufactured to meet Grade 8 strength requirements with standard hex profile and external drive style. The zinc yellow-chromate plating provides corrosion resistance while complying with industry standards for heavy-duty industrial applications. The nylon insert maintains locking performance up to the specified 220°F maximum temperature rating.