S-90521A259 1"-14 ASME B18.2.2, ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution - Extra wide profile (1 5/8" width) spreads clamping force evenly, reducing stress concentrations and preventing joint failure in heavy-duty applications.
• Superior Strength Certification - ASTM Grade 2H classification ensures high tensile strength and reliable performance under extreme mechanical loads.
• Precision Thread Compatibility - Class 2B fine thread fit (1"-14 UNF) provides smooth engagement and vibration resistance in critical assemblies.
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH environmental standards for safe use in regulated industrial environments.
• Standardized Manufacturing - Manufactured to ASME B18.2.2 and ASTM A194 specifications guaranteeing dimensional accuracy and interchangeability.
• Durable Material Construction - Steel composition offers excellent corrosion resistance and long-term reliability in harsh operating conditions.
• Optimized Installation Efficiency - External hex drive design enables quick installation with standard tools while maintaining torque integrity.

Professional Applications & Engineering Value

This Grade 2H heavy-duty hex nut addresses critical challenges in industrial fastening systems where vibration loosening and load fatigue compromise assembly integrity. The extra wide profile significantly increases bearing surface area, distributing stress across wider components to prevent deformation in structural connections. Engineered with 1"-14 UNF fine threads, it maintains tighter clamping force in high-vibration environments like heavy machinery, mining equipment, and construction infrastructure. The steel construction combined with Class 2B thread fit ensures precise mating with corresponding bolts while resisting corrosion in demanding applications. Compliant with ASME B18.2.2 standards, this nut delivers predictable performance in load-critical joints where failure is not an option.

Specification Summary & Compliance

Manufactured to ASME B18.2.2 dimensional standards with Class 2B thread tolerances for precision fit. Meets ASTM A194 material specifications and carries ASTM Grade 2H strength certification for heavy-duty applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Thread specifications conform to 1"-14 UNS fine thread pattern with right-hand orientation.