S-90521A270 1 1/4"-7 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution thanks to the extra-wide profile design, reducing surface pressure and preventing material deformation
• Superior strength and reliability with ASTM Grade 2H certification, ensuring consistent performance under high-stress conditions
• Optimized assembly efficiency through coarse UNC threading, enabling faster installation and reduced cross-threading risks
• Precise thread engagement with Class 2B fit, providing secure fastening while maintaining easy adjustability
• Enhanced durability in harsh environments with high-quality steel construction, resisting wear and corrosion
• Compliance with rigorous industry standards including ASTM A194, ensuring material quality and manufacturing consistency
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to address critical challenges in industrial and construction applications where vibration, dynamic loads, and structural integrity are paramount. The extra-wide profile distributes clamping force over a larger area, significantly reducing the risk of joint loosening in machinery, structural steel connections, and heavy equipment. Manufactured from high-strength steel and certified to ASTM Grade 2H, it maintains clamping force under extreme tension, preventing catastrophic failures in construction and industrial fastening systems. The 1 1/4"-7 UNC coarse thread design ensures rapid installation in time-sensitive projects while the Class 2B thread fit provides the ideal balance between secure engagement and practical adjustability for maintenance operations.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit with 1 1/4"-7 UNC coarse thread specifications, manufactured to ASTM A194 material requirements and ASTM Grade 2H strength certification. The dimensional configuration includes a 2" width and 1 7/32" height with right-hand thread direction. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets.