S-90043A125 1 1/2"-6 Square Nuts

Key Features & Benefits at a Glance

• Superior load distribution with 2 1/4" square design for enhanced stability in heavy-duty applications
• Exceptional thread engagement through Class 2B fit UNC coarse threads ensuring reliable vibration resistance
• Quick installation capability with external square drive design for efficient wrench access in confined spaces
• Long-term corrosion resistance provided by durable steel construction in demanding industrial environments
• Optimized mechanical performance through right-hand thread direction compatible with standard assembly practices
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Enhanced grip surface with 1 5/16" height providing ample contact area for secure tool engagement

Professional Applications & Engineering Value

This heavy-duty square nut delivers critical engineering solutions where standard fasteners fall short. The 1 1/2"-6 UNC coarse thread configuration combined with Class 2B thread fit provides exceptional resistance to loosening under dynamic loads, making it ideal for construction equipment, industrial machinery, and structural applications. The external square drive design enables superior torque transmission during installation, while the substantial 2 1/4" width creates a larger bearing surface that distributes clamping force effectively, preventing material deformation in soft substrates. Manufactured from grade steel, this square nut maintains integrity in high-stress environments where vibration and shock loads are common, offering engineers a reliable fastening solution that reduces maintenance frequency and improves equipment uptime.

Specification Summary & Compliance

This square nut features 1 1/2"-6 UNC coarse threads with Class 2B thread fit per ASME B18.2.2 standards, ensuring precise dimensional accuracy and interchangeability. The inch system measurement provides 2 1/4" width and 1 5/16" height with right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to restricted substance requirements for industrial and construction applications worldwide.