S-96177A320 3/8"-24 x 3/4" 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
• Precise thread engagement with Class 2B fine thread fit ensuring reliable, vibration-resistant connections
• Full threading design provides maximum grip strength and uniform stress distribution across the entire length
• ASTM A108 compliance guarantees consistent material quality and mechanical performance
• Right-hand UNF fine threads deliver superior holding power in high-vibration applications
• Regulatory compliance with RoHS 3 and REACH standards meets international environmental and safety requirements
• Standard coupling profile ensures compatibility with existing industrial fastener systems

Professional Applications & Engineering Value

This black-oxide steel coupling nut addresses critical engineering challenges in demanding industrial applications where vibration resistance and environmental durability are paramount. The 3/8"-24 UNF fine threading with Class 2B thread fit provides exceptional connection stability in machinery, automotive, and construction equipment where loosening under dynamic loads can cause system failure. The fully threaded design maximizes surface contact area, distributing stress evenly to prevent localized fatigue. The black-oxide coating creates a protective barrier against moisture and chemicals, making these coupling nuts ideal for outdoor equipment, hydraulic systems, and assembly lines where corrosion protection is essential for long-term reliability.

Specification Summary & Compliance

This coupling nut features 3/8"-24 UNF fine threads with Class 2B thread fit per unified thread standards, ensuring precise dimensional accuracy and interchangeability. Manufactured from ASTM A108 compliant steel with standard dimensions of 31/64" OD and 3/4" length. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations current as of January 17, 2023, meeting all 233 SVHC requirements for industrial use.