S-97135A409 1 3/4"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking mechanism that maintains secure fastening under dynamic loads
• Exceptional corrosion protection through zinc yellow-chromate plating for extended service life in harsh environments
• High-temperature performance with nylon insert rated up to 220°F, ensuring reliable locking in demanding thermal conditions
• Heavy-duty strength meeting Grade 8 specifications for maximum load-bearing capacity in critical applications
• Precision fine threading with UNF 1 3/4"-12 and Class 2B fit for smooth engagement and consistent clamping force
• Easy installation and removal with standard external hex drive design compatible with common industrial tools
• Reliable right-hand threading following industry standards for straightforward assembly in conventional applications

Professional Applications & Engineering Value

This Grade 8 heavy-duty nylon insert locknut delivers exceptional engineering value in applications where vibration resistance and thermal stability are critical. The zinc yellow-chromate plated steel construction provides superior corrosion protection for industrial equipment, machinery, and structural assemblies exposed to harsh environments. The UNF fine threads (1 3/4"-12) ensure precise engagement and consistent clamping force, while the nylon insert locking mechanism maintains secure fastening even under extreme vibration and thermal cycling up to 220°F. This combination addresses common industrial challenges of fastener loosening, corrosion-induced failure, and thermal degradation, making it ideal for heavy machinery, automotive systems, and industrial manufacturing equipment where reliability is paramount.

Specification Summary & Compliance

This locknut features precision UNF fine threads with Class 2B thread fit for consistent engagement and reliable performance. Manufactured to Grade 8 strength specifications, it meets rigorous industrial standards for heavy-duty applications. The external hex drive design follows conventional industrial practices, while the right-hand threading conforms to standard assembly requirements. The zinc yellow-chromate plating provides environmental protection compliant with industrial corrosion resistance standards, ensuring long-term reliability in demanding operating conditions.