S-90983A229 3/4"-10 x 2 1/4" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 8 classification, ensuring reliable performance in high-stress industrial applications and reducing the risk of fastener failure.
• Superior corrosion resistance from zinc-plated steel construction, extending service life in harsh environments and minimizing maintenance needs.
• Precise thread engagement with Class 2B fit and UNC coarse threading, providing smooth assembly and secure connections without cross-threading issues.
• Easy installation and removal thanks to the external hex drive style, allowing for standard wrench access and efficient maintenance operations.
• Full-threaded design maximizes grip length and load distribution, enhancing joint integrity in demanding coupling applications.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe usage and meeting global regulatory requirements for industrial components.
• Robust dimensional stability with 1 1/8" width and 2 1/4" length, offering consistent performance in aligned assembly setups.

Professional Applications & Engineering Value

This Grade 8 zinc-plated steel coupling nut is engineered to address critical challenges in heavy-duty industrial environments, such as vibration-induced loosening and corrosion degradation. The UNC coarse thread design ensures quick assembly and disassembly, reducing downtime in maintenance-intensive operations like machinery alignment, structural framing, and pipeline connections. Made from high-strength steel with a durable zinc plating, it resists rust and wear in exposed or humid conditions, making it ideal for construction, automotive, and manufacturing sectors. The external hex drive facilitates easy torque application with standard tools, while the fully threaded profile enhances load-bearing capacity, ensuring secure, long-lasting joints in high-tension applications.

Specification Summary & Compliance

This coupling nut adheres to UNC thread standards with a Class 2B thread fit for precise dimensional accuracy and smooth engagement. It meets Grade 8 strength requirements, ensuring high tensile and yield performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory alignment for industrial use. Thread specifications include a 3/4"-10 coarse spacing and right-hand direction, with overall dimensions of 1 1/8" width and 2 1/4" length for consistent application fit.