S-96177A550 5/8"-11 x 1 1/2" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel finish, extending service life in demanding industrial environments
• Superior load distribution through full threading design, ensuring uniform stress across the entire coupling length
• Precise thread engagement with Class 2B fit, providing reliable connections without binding or cross-threading issues
• Heavy-duty performance backed by ASTM A108 compliance, guaranteeing consistent material strength and durability
• Quick assembly efficiency with coarse UNC threads, enabling faster installation in time-sensitive production environments
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring environmental and safety requirements are met
• Universal compatibility with standard 5/8"-11 UNC components, simplifying inventory management and replacement procedures

Professional Applications & Engineering Value

This black-oxide steel coupling nut delivers exceptional engineering value in industrial assembly applications where corrosion resistance and structural integrity are paramount. The fully threaded design with 5/8"-11 UNC coarse threads provides maximum thread engagement surface area, distributing tensile loads evenly to prevent stress concentration points. Manufactured to ASTM A108 specifications, this component maintains consistent mechanical properties in demanding environments such as machinery frameworks, structural supports, and heavy equipment assemblies. The Class 2B thread fit ensures smooth installation while maintaining secure connections, reducing assembly time and preventing cross-threading damage. Ideal for extending threaded rods, joining structural components, or creating custom-length fastening solutions in construction, manufacturing, and maintenance operations.

Specification Summary & Compliance

This coupling nut features 5/8"-11 UNC coarse threads with Class 2B thread fit tolerance, ensuring precise engagement with mating components. The standard coupling nut profile measures 55/64" OD with 1 1/2" length, manufactured from black-oxide steel per ASTM A108 material specifications. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and full REACH (EC 1907/2006) compliance with the latest SVHC updates. The right-hand threaded, fully threaded design maintains consistent performance across industrial applications requiring reliable, heavy-duty fastening solutions.