S-94485A111 1 1/8"-8 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior load distribution thanks to the extra wide profile (1 13/16" width), minimizing surface pressure and preventing material damage.
• Exceptional tensile strength and reliability from ASTM Grade 7 certification, ensuring performance in high-stress, heavy-duty applications.
• Precise and secure fastening with a Class 2B thread fit, offering excellent engagement and vibration resistance.
• Optimized for fine-thread applications with 1 1/8"-8 UN fine threading, providing superior adjustment and load-holding in dynamic environments.
• Guaranteed material and manufacturing quality through compliance with ASTM A194 specifications for high-pressure and high-temperature service.
• Enhanced durability and corrosion resistance from high-strength steel construction, extending service life in harsh industrial conditions.
• Broad compatibility with standard 1 1/8"-8 UN male threads and right-hand thread direction, simplifying integration into existing assemblies.

Professional Applications & Engineering Value

This extra wide hex nut is engineered to address critical challenges in heavy-duty industrial applications where standard fasteners fail. Its ASTM Grade 7 steel construction and extra wide profile provide a larger bearing surface, effectively distributing clamp load and reducing the risk of loosening under extreme vibration or dynamic loads—common in machinery, structural steelwork, and large-scale equipment. The 1 1/8"-8 fine thread and Class 2B thread fit ensure precise, reliable engagement with mating components, offering superior resistance to shock and fatigue. By meeting ASTM A194 specifications, this nut delivers consistent performance in high-pressure and high-temperature environments, making it an indispensable high-strength fastener for engineering projects demanding maximum reliability and safety.

Specification Summary & Compliance

This heavy-duty hex nut features a 1 1/8"-8 UN fine thread with a Class 2B thread fit for precise dimensional accuracy and secure mating. It complies with ASTM A194 for heavy hex nuts and is manufactured from ASTM Grade 7 high-strength steel, ensuring material integrity and performance under demanding conditions. The nut is designed with a right-hand thread direction and meets industry standards for dimensional consistency and mechanical properties, suitable for rigorous industrial and construction applications.