S-90499A045 2"-4 1/2 Hex Nuts

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Grade 8 strength classification for reliable performance in heavy machinery and structural applications
• Precise thread engagement through Class 2B thread fit ensuring consistent mating with bolts and reducing assembly issues
• Enhanced durability from high-grade steel construction resisting wear, corrosion, and mechanical stress in industrial environments
• Quick installation and removal with standard external hex drive design compatible with common wrenches and tools
• Secure fastening in high-vibration settings thanks to coarse UNC threads that maintain grip under dynamic loads
• Compliance with global safety standards including RoHS 3 and REACH, making them suitable for regulated industries
• Versatile sizing range from 2" to 4 1/2" thread sizes accommodating various project requirements in inch measurement systems

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 steel hex nuts deliver exceptional reliability where failure is not an option. The coarse UNC threads provide superior resistance to vibration loosening in heavy equipment, construction machinery, and transportation systems. With Class 2B thread fit precision, these nuts ensure consistent engagement with mating bolts, reducing the risk of cross-threading and assembly errors that can cause downtime. The external hex drive design allows for high torque application using standard tools, while the right-hand thread direction maintains compatibility with conventional fastening systems. Manufactured from high-strength steel, these nuts maintain integrity under extreme tension and shear forces, making them ideal for critical connections in structural frameworks, industrial machinery, and automotive assemblies where safety and performance are paramount.

Specification Summary & Compliance

This heavy-duty hex nut features 2"-4 1/2 UNC coarse threads with Class 2B thread fit tolerance for precise mating compatibility. Manufactured to Grade 8 strength standards using high-quality steel with standard hex profile and external drive style. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.