S-90521A109 7/16"-14 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional Load Distribution with extra wide profile and 3/4" width for reduced surface pressure and minimized risk of loosening under vibration.
• Superior Tensile Strength from ASTM Grade 2H steel construction, ensuring reliable performance in high-stress industrial applications.
• Quick and Secure Assembly with coarse 7/16"-14 UNC threads and Class 2B fit, providing smooth engagement and consistent clamping force.
• Enhanced Durability & Corrosion Resistance through robust steel material, suitable for demanding environments and long-term use.
• Compliance with Rigorous Standards including ASTM A194 specifications, guaranteeing material quality and manufacturing consistency.
• Environmental & Safety Assurance with full RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.
• Optimized for External Hex Drive Tools allowing for high-torque installation with common wrenches, improving installation efficiency.

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to address critical challenges in industrial fastening, where vibration resistance, high clamp load retention, and material integrity are paramount. The ASTM Grade 2H steel construction provides a high proof load capacity, making it ideal for structural connections, machinery assembly, and heavy equipment where extra wide profile distributes stress over a larger area, reducing the risk of material fatigue and joint failure. The 7/16"-14 UNC coarse thread design ensures faster installation and reduced cross-threading in field applications, while the right-hand thread and external hex drive offer compatibility with standard tools, streamlining maintenance and repair workflows in construction, automotive, and manufacturing sectors.

Specification Summary & Compliance

This hex nut adheres to precise dimensional standards with a Class 2B thread fit and UNC coarse thread spacing, ensuring consistent performance and interchangeability. Manufactured in compliance with ASTM A194 for heavy hex nuts and ASTM Grade 2H for material strength, it meets rigorous industrial specifications. The product is also verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substance restrictions.