S-90977A013 8-32 x 5/8" Coupling Nuts

Key Features & Benefits at a Glance

• High tensile strength from Grade 5 steel ensures reliable performance in heavy-duty applications, reducing the risk of fastener failure under stress.
• Corrosion-resistant zinc plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Fully threaded UNC coarse design allows for deep engagement and secure connections, ideal for joining long threaded rods or studs.
• Class 2B thread fit provides consistent, smooth assembly with standard bolts, improving installation efficiency and reducing cross-threading issues.
• External hex drive style offers easy installation and removal with common tools, speeding up assembly and disassembly processes.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, supporting sustainable and responsible manufacturing practices.
• Standard 1/2" width and 5/8" length deliver compatibility with common components, simplifying inventory management and part sourcing.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel coupling nut is engineered to address critical challenges in industrial assembly, such as vibration resistance and long-term durability. The UNC coarse threading and fully threaded design enable robust connections in machinery, automotive, and construction applications, where joining threaded rods or extending fastener lengths is essential. The zinc-plated finish combats corrosion in exposed or humid conditions, reducing downtime and maintenance. With its external hex drive, it ensures quick, tool-friendly installation, enhancing workflow efficiency. Ideal for heavy-duty coupling nuts uses, this component supports structural integrity and operational reliability in demanding environments.

Specification Summary & Compliance

This coupling nut features precise 8-32 UNC coarse threading with Class 2B thread fit for consistent accuracy and ease of assembly. Manufactured from zinc-plated steel to Grade 5 strength standards, it adheres to industry specifications for dimensional stability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial fasteners.