S-90012A100 5/8"-11 x 2 1/8" Coupling Nuts

Key Features & Benefits at a Glance

• High-strength aluminum construction provides excellent durability while reducing component weight for easier handling and lower shipping costs.
• Precision Class 2B thread fit ensures smooth, reliable engagement with mating components, minimizing cross-threading risks in repetitive assembly operations.
• Full-length UNC coarse threading offers maximum thread engagement area for superior load distribution and connection integrity.
• External hex drive design enables standard wrench access for straightforward installation and removal in confined spaces.
• Right-hand threading standardization maintains compatibility with common industrial equipment and simplifies maintenance procedures.
• Environmental compliance certification meets RoHS 3 and REACH standards for use in regulated industries and global supply chains.
• Optimized 2 1/8" length provides ample coupling distance for joining threaded rods or pipes while maintaining structural stability.

Professional Applications & Engineering Value

This 6061 aluminum coupling nut delivers exceptional value in applications where weight reduction, corrosion resistance, and reliable torque transmission are critical. The fully threaded UNC coarse thread profile maintains consistent engagement strength across the entire coupling length, preventing stress concentration points that can lead to fatigue failure. For mechanical assemblies, piping systems, and structural frameworks requiring extended connections, the 2 1/8" length provides sufficient overlap to maintain alignment while the external hex drive ensures compatibility with standard industrial tools. The Class 2B thread fit balances manufacturing efficiency with operational reliability, making these coupling nuts ideal for production environments where consistent performance and rapid installation are paramount.

Specification Summary & Compliance

This coupling nut features 5/8"-11 UNC coarse threads with Class 2B fit per ASME B1.1 standards, ensuring dimensional accuracy and interchangeability. The 2 1/8" length and 7/8" width provide standardized proportions for predictable performance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety for industrial applications worldwide.