S-96177A530 5/8"-11 x 1 1/4" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel finish, extending service life in harsh industrial environments
• Reliable thread engagement through fully threaded UNC coarse spacing, ensuring quick assembly and secure connections
• Precision thread fit with Class 2B tolerance, delivering consistent performance and reducing cross-threading risks
• Heavy-duty load capacity from ASTM A108 compliant steel construction, supporting demanding mechanical applications
• Broad compatibility with 5/8"-11 UNC threaded rods and bolts, simplifying inventory and replacement processes
• Regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Optimized dimensions (55/64" OD, 1 1/4" length) for balanced strength-to-weight ratio in space-constrained installations

Professional Applications & Engineering Value

This black-oxide steel coupling nut addresses critical challenges in industrial assembly where corrosion resistance and thread reliability are paramount. The fully threaded UNC coarse spacing enables rapid installation while maintaining vibration resistance in machinery, construction, and transportation equipment. Engineered with ASTM A108 material specifications, it provides consistent tensile strength for connecting threaded rods in structural frameworks, conveyor systems, and hydraulic assemblies. The Class 2B thread fit ensures smooth engagement without galling, reducing installation time and preventing thread damage in high-volume production environments. Its right-hand threading and standardized dimensions make it ideal for maintenance operations and OEM equipment manufacturing.

Specification Summary & Compliance

This coupling nut maintains Class 2B thread fit per Unified Thread Standard with 5/8"-11 UNC coarse thread specifications. Manufacturing complies with ASTM A108 material requirements, ensuring dimensional accuracy and mechanical properties. Regulatory conformity includes RoHS 3 (2015/863/EU) compliance under exemption 6(a) for lead alloying in steel, and full adherence to REACH (EC 1907/2006) regulations regarding substance restrictions.