S-98789A130 3/8"-16 Tamper Resistant Nuts

Key Features & Benefits at a Glance

• Enhanced tamper resistance with external square drive design prevents unauthorized removal in public or high-security environments
• Superior corrosion protection from zinc yellow-chromate plating extends service life in harsh industrial conditions
• Reliable thread engagement with Class 2B fit ensures consistent clamping force and vibration resistance
• Quick installation using coarse UNC 3/8"-16 threads reduces assembly time while maintaining secure fastening
• Durable steel construction provides high strength-to-weight ratio for demanding mechanical applications
• Regulatory compliance with RoHS 3 and REACH standards meets international environmental and safety requirements
• Standardized dimensions (1 3/64" width, 15/64" height) ensure compatibility with existing industrial equipment and tools

Professional Applications & Engineering Value

Engineered for critical security applications, this 3/8"-16 UNC tamper resistant nut addresses the growing need for vandal-proof fastening in public infrastructure, industrial machinery, and transportation systems. The zinc yellow-chromate plated steel construction delivers exceptional corrosion resistance in outdoor or chemically aggressive environments, while the external square drive requires specialized tools for installation and removal - effectively deterring tampering in unsupervised locations. The coarse thread spacing and Class 2B thread fit provide reliable performance in high-vibration settings common to manufacturing equipment, electrical enclosures, and public furniture, ensuring maintained integrity under dynamic loads without compromising security features.

Specification Summary & Compliance

This security nut features UNC 3/8"-16 coarse threads with Class 2B thread fit for standard industrial compatibility and precise engagement. Manufacturing adheres to standardized dimensions of 1 3/64" width and 15/64" height with right-hand thread direction. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical safety, making it suitable for global industrial distribution and applications requiring verified environmental compliance.