S-98858A107 1"-8 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• High-strength Grade 5 rating ensures reliable load-bearing capacity for demanding mechanical applications
• Easy installation and removal with external hex drive design, allowing for standard wrench access and secure tightening
• Optimal thread engagement with 1"-8 UNC coarse threading and Class 2B fit, reducing cross-threading risks
• Enhanced durability from the cap nut profile, providing a finished look and protection against debris ingress
• Compliance with environmental standards through RoHS 3 adherence, meeting global regulatory requirements
• Versatile right-hand threading for compatibility with common assembly processes and equipment

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel cap nut is engineered to address critical fastening challenges in industrial settings, such as vibration loosening and environmental degradation. The 1"-8 UNC coarse thread design, combined with a Class 2B thread fit, ensures precise alignment and robust connections in heavy machinery, structural frameworks, and automotive assemblies. The external hex drive facilitates quick installation with standard tools, reducing assembly time while maintaining torque integrity. Its zinc plating offers a protective barrier against moisture and chemicals, making it ideal for outdoor equipment, manufacturing plants, and construction projects where corrosion resistance and long-term reliability are paramount. By integrating high-strength materials and standardized threading, this nut minimizes downtime and enhances safety in industrial fastening applications.

Specification Summary & Compliance

This cap nut adheres to UNC thread standards with a Class 2B thread fit for consistent dimensional accuracy. It meets Grade 5 strength classification and is manufactured from zinc-plated steel, ensuring compliance with RoHS 3 (2015/863/EU) regulations under exemption 6(a)-I for lead as an alloying element. The product follows industry specifications for coarse threading and right-hand thread direction, supporting reliable performance in mechanical systems.