S-90521A260 1 1/8"-7 ASTM A194 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional load distribution thanks to the extra wide hex profile, reducing surface pressure and preventing material damage
- Superior strength and reliability with ASTM Grade 2H certification, ensuring consistent performance under high stress
- Easy and quick installation with coarse UNC threading and Class 2B fit, minimizing assembly time and cross-threading risks
- Enhanced durability in harsh environments through high-quality steel construction resistant to wear and deformation
- Compliance with rigorous industrial standards including ASTM A194, guaranteeing material and manufacturing quality
- Safe for global use with RoHS 3 and REACH compliance, meeting environmental and health regulations
- Optimized for heavy machinery with a 1 13/16" width providing a secure grip for standard wrenches in demanding applications
Professional Applications & Engineering Value
This heavy hex nut is engineered to address critical challenges in industrial settings where vibration, heavy loads, and frequent disassembly can compromise fastener integrity. The extra wide profile distributes clamping force more effectively, reducing the risk of joint loosening and surface indentation on connected materials. Made from high-strength steel and meeting ASTM Grade 2H requirements, it provides reliable performance in construction equipment, structural steel connections, and machinery assembly. The coarse UNC thread and Class 2B fit ensure quick, secure engagement even in dirty or high-vibration environments, minimizing downtime. Its compliance with RoHS and REACH makes it suitable for global supply chains, supporting sustainable and safe industrial operations.
Specification Summary & Compliance
This nut adheres to precise dimensional standards with a Class 2B thread fit and UNC coarse threading (1 1/8"-7), ensuring compatibility with standard bolts. It meets ASTM A194 material specifications and ASTM Grade 2H for high tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for industrial use without hazardous substances.
