S-97149A944 2"-4 1/2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black-oxide coating for extended service life in harsh industrial environments
• Exceptional durability in heavy-duty applications thanks to robust 3" width and 1 23/32" height dimensions
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and vibration resistance
• Easy installation and removal through standard external hex drive design compatible with common tools
• Optimized for coarse threading with UNC thread type providing faster assembly and reduced cross-threading risks
• Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial use
• Right-hand thread direction for standard clockwise tightening familiar to maintenance teams

Professional Applications & Engineering Value

These heavy-duty hex nuts solve critical fastening challenges in construction, machinery, and structural applications where corrosion resistance and thread reliability are paramount. The black-oxide 18-8 stainless steel combination provides superior protection against rust and chemical exposure, while the UNC coarse threads enable rapid assembly in field conditions. The Class 2B thread fit maintains precise tolerances for vibration-prone environments, preventing loosening in industrial equipment, bridge structures, and processing facilities. With their external hex drive and substantial 3" width, these nuts deliver the torque capacity needed for critical connections where failure is not an option.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2B thread fit per UNC specifications, ensuring dimensional accuracy and interchangeability. These coarse thread hex nuts feature right-hand threading with 2"-4 1/2 size range for versatile application coverage. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety. The standard hex nut profile and external hex drive conform to industrial fastening conventions for seamless integration into existing maintenance protocols and tooling systems.