S-90494A240 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced strength-to-weight ratio with thin profile design, reducing material usage without compromising structural integrity in Grade 2 steel construction.
• Superior vibration resistance due to UNF fine thread spacing, maintaining secure fastening in high-stress industrial environments.
• Precise thread engagement with Class 2B thread fit, ensuring smooth assembly and reducing the risk of cross-threading in repetitive applications.
• Broad compatibility with standard inch-system components, facilitated by right-hand threading and external hex drive for easy installation with common tools.
• Long-term reliability through RoHS 3 and REACH compliance, eliminating hazardous substances for safer workplace and environmental sustainability.
• Optimized space utilization with compact 23/32" height and 1 7/8" width, ideal for confined assembly areas requiring low-profile fasteners.
• Cost-effective performance combining Grade 2 steel durability with fine thread precision, delivering extended service life in mechanical and structural applications.

Professional Applications & Engineering Value

This Grade 2 steel thin hex nut addresses critical challenges in precision assemblies where space constraints and vibration resistance are paramount. The UNF fine thread configuration provides increased tensile strength and superior clamping force compared to coarse threads, reducing loosening under dynamic loads in machinery, automotive, and heavy equipment. Its thin profile minimizes weight and bulk while maintaining full Class 2B thread fit tolerance, ensuring reliable engagement with mating components. The external hex drive design allows for high-torque installation using standard wrenches, streamlining maintenance in industrial settings. Manufactured from compliant steel, it meets rigorous environmental standards without sacrificing mechanical performance in corrosive or high-temperature environments.

Specification Summary & Compliance

This hex nut adheres to UNF thread standards with 1 1/4"-12 fine thread spacing and Class 2B thread fit for consistent dimensional accuracy. Manufacturing conforms to Grade 2 strength classification for reliable performance in general purpose applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures material safety and environmental responsibility. Dimensions include 1 7/8" width across flats and 23/32" height, providing standardized interchangeability within inch-measurement systems.