S-91694A345 1 1/2"-6 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel construction for long-lasting performance in harsh industrial environments
• Superior load-bearing capacity with ASTM Grade DH strength rating for heavy-duty applications requiring maximum reliability
• Enhanced wrench grip from the extra wide hex profile, providing better torque application and reducing slippage during installation
• Quick and secure assembly with coarse UNC threads and Class 2B fit, ensuring smooth engagement and vibration resistance
• Industry-standard compliance with ASTM A563 specifications for guaranteed dimensional accuracy and mechanical properties
• Environmental safety assurance through RoHS 3 compliance, meeting strict regulatory standards for hazardous substances
• Optimized for high-stress applications with large 1 1/2"-6 thread size and robust 2 3/8" width for structural integrity

Professional Applications & Engineering Value

This heavy-duty hex nut delivers critical engineering solutions where standard fasteners fail. The hot-dipped galvanized steel construction creates a protective zinc barrier that withstands moisture, chemicals, and outdoor exposure, significantly extending service life in infrastructure, construction, and marine applications. The extra wide hex profile allows for higher torque application with standard tools, preventing rounding and ensuring secure connections in high-vibration environments. With coarse UNC threads and Class 2B thread fit, these nuts provide rapid installation while maintaining precise engagement with mating bolts, reducing assembly time and preventing loosening under dynamic loads. The combination of ASTM Grade DH strength and large 1 1/2"-6 size makes these nuts ideal for structural steel connections, heavy machinery, and industrial equipment where failure is not an option.

Specification Summary & Compliance

This hex nut features Class 2B thread fit per UNC standards, ensuring proper clearance and engagement with mating threads. Manufactured to ASTM A563 specifications with ASTM Grade DH mechanical properties for guaranteed strength performance. The product is RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for hazardous substance restrictions. Dimensions include 2 3/8" width across flats and 1 15/32" height for consistent dimensional accuracy across production batches.