S-96177A390 3/8"-16 x 1 1/2" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments
• Maximum thread engagement through full threading design, ensuring reliable connections across extended rod or bolt lengths
• Precise thread compatibility with Class 2B fit and UNC coarse threads, providing smooth assembly and reduced cross-threading risk
• Heavy-duty load capacity meeting ASTM A108 specifications, delivering consistent performance under high-stress applications
• Regulatory compliance assurance with RoHS 3 and REACH standards, enabling global supply chain integration
• Optimized dimensional stability with 1-1/2" length and 31/64" OD, maintaining alignment in extended coupling configurations
• Right-hand thread orientation for standardized installation procedures across industrial equipment and machinery

Professional Applications & Engineering Value

Engineered for extending threaded rod assemblies and joining male-threaded components, this black-oxide steel coupling nut solves critical alignment and corrosion challenges in industrial frameworks. The fully threaded UNC coarse pattern with Class 2B fit ensures uniform stress distribution across the entire 1-1/2" length, preventing joint failure in conveyor systems, structural supports, and machinery linkages. The black-oxide surface treatment provides essential protection against oxidation in humid or chemical-exposed environments, while maintaining the ASTM A108 material integrity for repeated torque applications. This combination addresses common issues of galvanic corrosion and thread stripping in heavy-duty coupling applications, making it ideal for construction, manufacturing, and automotive assembly lines.

Specification Summary & Compliance

This coupling nut maintains Class 2B thread tolerances per Unified Thread Standard specifications with 3/8"-16 UNC coarse threading. Manufacturing complies with ASTM A108 material standards for consistent mechanical properties. Regulatory adherence includes RoHS 3 (2015/863/EU) compliance under exemption 6(a) for lead alloying in steel, and full REACH (EC 1907/2006) compliance with current SVHC requirements, ensuring environmental and safety standards for industrial distribution.