S-96177A310 3/8"-16 x 3/4" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to black-oxide steel construction, extending service life in harsh industrial environments
• Exceptional thread engagement with fully threaded UNC coarse spacing for faster assembly and reliable connections
• Precise Class 2B thread fit ensures smooth installation and reduces cross-threading risks in demanding applications
• High tensile strength from ASTM A108 compliant steel provides dependable performance under heavy loads
• Optimized dimensions (3/4" length, 31/64" OD) offer ideal clearance and grip for various coupling configurations
• Full regulatory compliance with RoHS 3 and REACH standards eliminates supply chain concerns for global operations
• Right-hand threading design enables standard installation procedures and compatibility with common UNC fasteners

Professional Applications & Engineering Value

This black-oxide steel coupling nut delivers critical engineering value by solving common industrial fastening challenges. The fully threaded UNC coarse spacing provides maximum thread contact area, preventing loosening under vibration while enabling rapid assembly in heavy-duty applications like machinery assembly, structural frameworks, and hydraulic systems. The black-oxide surface treatment creates a protective barrier against oxidation and corrosion, significantly extending service life in demanding environments where moisture or chemicals are present. Manufactured to ASTM A108 specifications, this coupling nut maintains dimensional stability under extreme tension, making it ideal for connecting threaded rods, pipes, and other components where reliable load transfer is paramount for operational safety and equipment longevity.

Specification Summary & Compliance

This coupling nut features 3/8"-16 UNC coarse threads with Class 2B thread fit for standard industrial applications. Manufactured according to ASTM A108 specifications, it ensures consistent dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements as of January 17, 2023, including 233 SVHC substances, making it suitable for regulated industries and international markets.