S-90521A039 1 1/2"-6 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional Load Distribution - Extra wide profile (2 3/8" width) spreads clamping force evenly, reducing stress concentrations and preventing joint failure
• Superior Strength Performance - ASTM Grade 2H certification ensures high tensile strength for demanding industrial applications and heavy machinery
• Quick Installation Efficiency - Coarse UNC threading enables faster assembly and disassembly, saving valuable maintenance time
• Reliable Thread Engagement - Class 2B thread fit provides optimal clearance for smooth installation while maintaining secure fastening integrity
• Enhanced Durability - Steel construction with ASTM A194 compliance offers excellent resistance to vibration loosening and mechanical stress
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH standards, ensuring environmental responsibility and global market acceptance
• Optimized Tool Access - External hex drive design allows for standard wrenching tools and torque application in confined spaces

Professional Applications & Engineering Value

This heavy-duty hex nut delivers exceptional engineering value in demanding industrial environments where vibration resistance and structural integrity are paramount. The extra wide profile combined with coarse UNC threading provides superior load distribution across wider surface areas, effectively solving common issues of joint fatigue and stress concentration in heavy machinery, structural steel frameworks, and industrial equipment. The ASTM Grade 2H steel construction ensures reliable performance under extreme mechanical stress, while the Class 2B thread fit guarantees smooth installation without compromising fastening security. This industrial hex nut is particularly valuable in construction equipment, mining machinery, and heavy manufacturing applications where durability and long-term reliability are critical operational requirements.

Specification Summary & Compliance

This heavy-duty fastener features precise Class 2B thread fit with 1 1/2"-6 UNC coarse threading and right-hand thread direction, manufactured to ASTM A194 specifications for heavy hex nuts. The nut meets ASTM Grade 2H strength requirements with dimensions of 2 3/8" width and 1 15/32" height. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory adherence for industrial applications worldwide.