S-96177A520 1/2"-20 x 2" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel finish, ideal for harsh industrial environments
• Precise thread engagement with Class 2B fine threading ensures reliable, vibration-resistant connections
• Full-threaded design provides maximum grip strength and load distribution across the entire length
• Standard UNF thread profile guarantees compatibility with common industrial components and tools
• ASTM A108 compliance delivers consistent mechanical properties and material reliability
• Environmental regulation compliance with RoHS 3 and REACH for global supply chain acceptance
• Optimized dimensions (37/64" OD, 2" length) balance strength with space constraints in assembly applications

Professional Applications & Engineering Value

This black-oxide steel coupling nut solves critical challenges in industrial assembly where extended-length fasteners are required. The fully threaded 1/2"-20 UNF design with Class 2B thread fit provides exceptional resistance to loosening under vibration, making it ideal for connecting threaded rods in construction, machinery frames, and piping systems. The black-oxide surface treatment creates a protective barrier against oxidation and mild chemical exposure, extending service life in manufacturing facilities and outdoor installations. Engineered to ASTM A108 standards, this coupling nut maintains dimensional stability under heavy tensile loads, preventing joint failure in critical applications from automotive to heavy equipment manufacturing.

Specification Summary & Compliance

This coupling nut features 1/2"-20 UNF fine threading with Class 2B thread fit for precision engagement. Manufactured to ASTM A108 specifications with dimensions of 37/64" OD and 2" length. Compliant with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations (01/17/2023, 233 SVHC) for environmental safety and international market acceptance.