S-90580A844 1 1/8"-7 ASTM A563 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution through extra wide profile design, reducing stress concentration and preventing joint failure
• Superior strength performance with ASTM Grade C certification, ensuring reliability in high-tension applications
• Optimized coarse threading (1 1/8"-7 UNC) enables faster assembly and reduced cross-threading risks
• Precise Class 2B thread fit provides consistent engagement with mating components for vibration resistance
• Full regulatory compliance with RoHS 3 and REACH standards, meeting international environmental requirements
• Robust steel construction delivers exceptional durability and corrosion resistance in industrial environments
• Standardized dimensions (1 3/4" width, 1 7/64" height) ensure compatibility with standard tools and equipment

Professional Applications & Engineering Value

This heavy-duty hex nut delivers critical engineering solutions where standard fasteners fail. The extra wide profile significantly increases bearing surface area, distributing clamp load more effectively across connected materials - a crucial advantage in structural steel connections, heavy machinery assembly, and construction applications where joint integrity is paramount. Manufactured from ASTM A563 Grade C steel, the nut maintains dimensional stability under extreme static and dynamic loads. The coarse UNC threading provides superior resistance to vibration loosening while accommodating minor material deformations in demanding environments. These combined features make it ideal for bridge construction, mining equipment, and industrial machinery where reliable thread engagement and long-term performance cannot be compromised.

Specification Summary & Compliance

This 1 1/8"-7 UNC hex nut features Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and interchangeability. Manufactured in compliance with ASTM A563 Grade C specifications for mechanical properties and material composition. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives, confirming absence of restricted substances. Dimensions include 1 3/4" width across flats and 1 7/64" height, providing the extra wide profile specified for heavy-duty applications in inch measurement systems.