S-90521A242 5/8"-18 ASME B18.2.2, 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
- Superior load distribution with an extra wide profile that reduces stress concentration and prevents joint failure under heavy loads
- Maximum torque resistance through ASTM Grade 2H high-strength steel construction, ensuring reliable performance in demanding applications
- Precise, secure fastening with Class 2B fine UNF threading that minimizes loosening from vibrations and thermal cycling
- Enhanced durability from ASME B18.2.2 and ASTM A194 compliance, guaranteeing consistent quality and dimensional accuracy
- Environmental and workplace safety with full RoHS 3 and REACH compliance, eliminating hazardous substances in industrial settings
- Optimized wrench engagement due to the 1 1/16" width and external hex drive, allowing for efficient installation and removal
- Reliable right-hand threading for standard assembly processes, reducing installation errors and improving workflow efficiency
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this 5/8"-18 UNF Grade 2H hex nut addresses critical challenges in machinery, structural assemblies, and high-vibration environments. The extra wide profile distributes clamping force evenly, reducing the risk of material deformation and bolt fatigue—common issues in high-torque scenarios. Made from ASTM A194 steel and meeting ASME B18.2.2 standards, it ensures precise Class 2B fine threading for leak-proof and vibration-resistant connections. Ideal for construction, automotive, and manufacturing sectors, this nut provides long-term reliability while complying with RoHS and REACH for safe, sustainable operations.
Specification Summary & Compliance
This hex nut features a 5/8"-18 UNF fine thread with Class 2B fit for accurate engagement and consistent performance. It adheres to ASME B18.2.2 dimensional standards and is manufactured from ASTM A194 steel under Grade 2H strength requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in global markets.
