S-90983A263 1 1/2"-12 x 3 1/2" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 8 rating for reliable performance in high-stress applications
• Superior corrosion resistance from zinc-plated steel coating, extending service life in harsh environments
• Precise thread engagement with Class 2B fit ensuring smooth assembly and vibration resistance
• Optimized torque transmission through external hex drive design for secure installation with standard tools
• Full-length threading provides maximum engagement area for stronger joint connections
• Fine UNF thread pattern (1½"-12) delivers better tension control and improved sealing capabilities
• Regulatory compliance with RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This Grade 8 coupling nut delivers critical engineering solutions where extended-length fastening is required. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery, and structural applications exposed to environmental elements. The 1½"-12 UNF fine threading with Class 2B thread fit ensures precise alignment and secure connections in vibration-prone systems, while the external hex drive allows for high-torque installation without stripping. Measuring 3½" in length, this fully threaded coupling nut bridges longer gaps between male-threaded components in hydraulic systems, heavy machinery, and industrial assembly lines, maintaining high-strength integrity throughout the connection.

Specification Summary & Compliance

This coupling nut features Class 2B thread fit per UNF standards with 1½"-12 fine threading and right-hand thread direction. Manufactured from zinc-plated steel to Grade 8 strength specifications, it meets dimensional requirements of 2¼" width and 3½" length. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety standards for industrial procurement.