S-90100A107 1"-8 Cap Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength rating, ensuring reliable performance in high-stress industrial environments.
• Superior corrosion resistance from zinc-plated steel coating, extending service life in harsh or outdoor conditions.
• Easy installation and removal with external hex drive design, allowing for standard wrench compatibility and efficient assembly.
• Secure, vibration-resistant fit due to Class 2B thread fit and coarse UNC threading, minimizing loosening under dynamic loads.
• Enhanced durability and longevity from heavy-duty steel construction, suitable for repetitive use in demanding applications.
• Wide compatibility with 1"-8 UNC coarse threaded bolts and components, simplifying sourcing and replacement.
• Environmental and regulatory compliance with RoHS 3 standards, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This Grade 8 zinc-plated steel cap nut is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where vibration resistance and corrosion protection are paramount. The 1"-8 UNC coarse thread design ensures quick, secure fastening even in high-vibration environments, reducing maintenance downtime. Made from high-strength steel with a zinc plating finish, it combats rust and wear in exposed or humid conditions, making it ideal for structural frames, equipment mounts, and industrial fixtures. The external hex drive allows for high-torque application with common tools, streamlining installation in tight spaces. By combining robust material properties with precise Class 2B thread fit, this cap nut delivers consistent clamping force and reliability, enhancing the safety and longevity of your mechanical systems.

Specification Summary & Compliance

This cap nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent engagement and dimensional accuracy. It meets Grade 8 strength requirements, ensuring high tensile and yield strength for demanding applications. The product is manufactured in compliance with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead as an alloying element in steel, supporting environmental safety and regulatory adherence. Key dimensions include a 1"-8 thread size, 1 7/16" width, and 1 35/64" height, providing a standardized fit for industrial fastening systems.