S-90212A816 1 7/8"-8 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue PTFE coating that protects against harsh industrial environments and extends service life
• Exceptional load-bearing capacity from ASTM Grade 2H strength rating, ensuring reliable performance under high-stress conditions
• Enhanced wrench grip and torque application due to the extra wide hex profile, reducing slippage and installation time
• Precise thread engagement with Class 2B thread fit and UN fine thread design, minimizing vibration loosening in critical assemblies
• Industry-standard compliance meeting ASTM A194 specifications for consistent quality and interchangeability in industrial applications
• Optimized for heavy-duty applications with robust 1 27/32" height and 2 15/16" width, providing maximum clamping force distribution
• Right-hand thread compatibility with standard inch-system components, ensuring easy integration into existing equipment and maintenance workflows

Professional Applications & Engineering Value

This heavy-duty hex nut addresses critical engineering challenges in industrial settings where vibration resistance, corrosion protection, and sustained clamping force are paramount. The blue PTFE-coated steel construction creates a durable barrier against chemical exposure and atmospheric corrosion, significantly reducing maintenance frequency in processing plants, marine equipment, and outdoor machinery. The extra wide hex profile enables higher torque application without tool slippage, while the UN fine thread design maintains secure fastening in high-vibration environments like heavy machinery, structural steel connections, and power transmission systems. Engineered with ASTM Grade 2H strength, this nut delivers reliable performance in bolted joints subjected to dynamic loading and thermal cycling, making it ideal for critical applications requiring long-term reliability and superior thread engagement.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit with 1 7/8"-8 UN fine threads in right-hand direction, manufactured to ASTM A194 specifications for heavy hex nuts. The component maintains dimensional accuracy per inch system standards with 2 15/16" width and 1 27/32" height, ensuring proper engagement with matching fasteners. Compliant with industry standards for material composition and mechanical properties, this nut meets relevant industrial safety and quality requirements for demanding applications.