S-90977A038 1"-8 x 2 3/4" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 5 classification, ensuring reliable performance in high-stress industrial applications.
• Superior corrosion resistance from zinc-plated steel construction, extending service life in harsh environments.
• Precise thread engagement with Class 2B fit and 1"-8 UNC coarse threads, reducing cross-threading risks and ensuring secure connections.
• Full-threaded design for maximum grip and load distribution across the entire 2 3/4" length, enhancing joint integrity.
• Easy installation and removal with standard external hex drive, compatible with common wrenches for efficient assembly.
• Compliance with environmental standards including RoHS 3 and REACH, making it suitable for regulated industries.
• Versatile right-hand threading for standard applications, facilitating straightforward integration into existing systems.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel coupling nut is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and corrosion degradation. Its 1"-8 UNC coarse threads and Class 2B thread fit provide optimal tolerance for easy alignment and robust connections in heavy machinery, structural frameworks, and automotive assemblies. The fully threaded design ensures uniform stress distribution, minimizing the risk of fatigue failure under dynamic loads. Made from zinc-plated steel, it offers enhanced durability against moisture and chemicals, making it ideal for outdoor or corrosive environments. This coupling nut delivers reliable performance in applications requiring extended rod joining or spacer functions, supported by its external hex drive for quick installation with standard tools.

Specification Summary & Compliance

This coupling nut features a 1"-8 UNC coarse thread with Class 2B thread fit for precise dimensional accuracy, adhering to standardized threading systems. It is manufactured from zinc-plated steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The product meets Grade 5 strength requirements, with dimensions of 2 3/4" length and 1 3/8" width, suitable for rigorous industrial use.