S-90521A235 1/2"-13 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional Load Distribution with extra wide hex profile for reduced surface pressure and minimized risk of loosening under vibration.
• High Tensile Strength from ASTM Grade 2H steel construction, ensuring reliable performance in heavy-duty and high-stress applications.
• Secure, Consistent Fastening due to Class 2B thread fit, providing optimal engagement with mating bolts and reducing cross-threading risks.
• Quick Assembly Efficiency with 1/2"-13 UNC coarse threads, enabling faster installation and easier maintenance in industrial settings.
• Enhanced Durability & Corrosion Resistance through robust steel material, suitable for long-term use in demanding environments.
• Regulatory Compliance Assurance meeting RoHS 3 and REACH standards, ensuring safety and environmental responsibility for global supply chains.
• Broad Compatibility with standard inch-system components, simplifying procurement and replacement in existing assemblies.

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to address critical challenges in industrial fastening, where vibration, high loads, and harsh conditions can compromise joint integrity. The extra wide profile distributes clamping force more effectively, reducing stress concentrations on connected surfaces—ideal for structural steelwork, machinery bases, and heavy equipment. Manufactured from ASTM Grade 2H steel, it maintains clamp load under extreme tension, preventing failures in construction, mining, and transportation applications. The UNC coarse thread design ensures rapid installation and resistance to debris clogging, while the Class 2B thread fit guarantees consistent torque performance. By combining high strength with regulatory compliance, this nut delivers reliability and safety for engineers specifying industrial fasteners in global projects.

Specification Summary & Compliance

This hex nut adheres to ASTM A194 specifications for heavy-duty nuts, with 1/2"-13 UNC coarse threads and Class 2B thread fit ensuring precise dimensional accuracy. It meets ASTM Grade 2H strength requirements for high tensile applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use. Dimensions include a 7/8" width and 31/64" height, providing a robust form factor for secure fastening.