S-90521A240 5/8"-11 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution with extra wide profile reduces surface pressure and prevents joint failure in high-stress applications
• Superior Strength Performance through ASTM Grade 2H certification ensures reliable performance under extreme mechanical loads
• Optimized Thread Engagement with Class 2B thread fit provides consistent clamping force and vibration resistance
• Durable Material Construction using high-strength steel delivers excellent corrosion resistance and long service life
• Quick Installation Efficiency with coarse UNC threads enables faster assembly and reduced labor time
• Regulatory Compliance Assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Secure External Hex Drive design allows for high-torque application with standard wrench tools

Professional Applications & Engineering Value

This heavy-duty hex nut addresses critical engineering challenges in industrial fastening systems where vibration resistance and load capacity are paramount. The ASTM A194 steel construction combined with the extra wide profile significantly increases bearing surface area, distributing clamping forces more effectively to prevent material deformation and joint loosening. The 5/8"-11 UNC coarse thread configuration ensures rapid installation in time-sensitive maintenance operations while maintaining secure fastening in heavy machinery, structural steel assemblies, and construction equipment. The Grade 2H strength rating provides an additional safety margin for critical applications where fastener failure could lead to catastrophic equipment damage or operational downtime, making it ideal for industrial fastening solutions requiring proven reliability.

Specification Summary & Compliance

This hex nut features precision Class 2B thread fit tolerances with UNC coarse thread specifications measuring 5/8"-11. Manufactured to ASTM A194 material standards with ASTM Grade 2H mechanical properties, ensuring consistent performance across industrial applications. Dimensions include 1 1/16" width and 39/64" height for standardized tool compatibility. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and international markets.