S-90521A110 7/16"-20 ASME B18.2.2, ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced torque distribution through extra wide hex profile for reduced fastener failure in high-vibration applications
• Superior load-bearing capacity with ASTM Grade 2H steel construction, providing excellent tensile strength for heavy-duty use
• Precision fine threading (7/16"-20 UNF) ensures secure, vibration-resistant connections in critical assemblies
• Consistent performance guaranteed by ASME B18.2.2 compliance and Class 2B thread fit for reliable installation
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
• Optimized wrench engagement with 3/4" width providing superior tool access and installation efficiency
• Durable corrosion resistance from high-grade steel construction, extending service life in demanding environments

Professional Applications & Engineering Value

This heavy-duty hex nut addresses critical engineering challenges in industrial fastening systems where vibration resistance and load distribution are paramount. The extra wide profile significantly increases surface contact area, distributing clamping forces more evenly to prevent joint loosening in machinery, structural steel connections, and heavy equipment assemblies. The 7/16"-20 UNF fine thread configuration provides superior resistance to vibrational loosening compared to coarse threads, making it ideal for precision applications in automotive, aerospace, and manufacturing sectors. Manufactured from ASTM Grade 2H steel, this nut maintains integrity under extreme tension while the Class 2B thread fit ensures smooth installation without galling or cross-threading issues.

Specification Summary & Compliance

This hex nut features precise 7/16"-20 UNF fine threads with Class 2B fit per ASME standards, ensuring consistent thread engagement and reliable performance. Manufacturing complies with ASME B18.2.2 dimensional specifications and ASTM A194/ASTM Grade 2H material requirements. The nut measures 3/4" across flats with 27/64" height for optimal strength-to-size ratio. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for global industrial applications.