S-90521A037 1 7/8"-8 ASME B18.2.2, ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior load distribution with extra wide profile for enhanced stability in high-vibration environments
• Exceptional mechanical strength through ASTM Grade 2H certification, ensuring reliable performance under heavy loads
• Precise thread engagement with Class 2B fit and UN fine threads for secure, vibration-resistant connections
• Industry-standard compliance meeting ASME B18.2.2 specifications for guaranteed dimensional accuracy
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable industrial applications
• Optimized installation through external hex drive design for efficient torque application
• Long-term durability from high-quality steel construction resisting corrosion and wear

Professional Applications & Engineering Value

This high-strength hex nut addresses critical engineering challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The 1 7/8"-8 fine thread configuration provides superior resistance to vibrational loosening while maintaining precise clamping force in demanding applications. Manufactured from ASTM Grade 2H steel, this fastener delivers exceptional mechanical properties for high-stress connections where reliability is paramount. The extra wide profile significantly increases bearing surface area, distributing loads more effectively and preventing surface damage to connected materials. Ideal for construction, mining, and heavy manufacturing applications, this UN thread nut with Class 2B thread fit ensures consistent performance in inch-system assemblies requiring robust, long-lasting fastening solutions.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit with UN fine thread specifications (1 7/8"-8) manufactured to ASME B18.2.2 dimensional standards. The fastener meets ASTM A194 material requirements and carries ASTM Grade 2H strength classification for heavy-duty applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures responsible manufacturing practices. Dimensions include 2 15/16" width and 1 27/32" height with right-hand thread direction, providing reliable performance in industrial fastening systems.