S-91849A042 1 3/8"-6 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced load distribution from the extra wide hex profile, reducing surface pressure and preventing material damage
• Quick and secure installation with coarse UNC threads and Class 2B fit, ensuring reliable engagement and vibration resistance
• High torque capability through the external hex drive design, allowing for efficient tightening with standard tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Heavy-duty durability with substantial 2 3/16" width and 1 11/32" height, providing exceptional mechanical strength
• Universal compatibility with right-hand threaded components in inch-system applications across various sectors

Professional Applications & Engineering Value

This extra wide hex nut delivers critical engineering advantages in demanding applications where standard fasteners fail. The 18-8 stainless steel composition provides exceptional corrosion resistance, making it ideal for chemical processing, marine environments, and outdoor infrastructure. The coarse UNC thread with Class 2B fit ensures rapid assembly while maintaining vibration resistance in heavy machinery, construction equipment, and transportation systems. The enlarged bearing surface of the extra wide profile distributes clamping force more effectively, preventing joint loosening and surface deformation in structural connections. These features combine to solve common industrial challenges including premature fastener failure, maintenance downtime, and compliance requirements in regulated sectors.

Specification Summary & Compliance

This heavy-duty hex nut features precision 1 3/8"-6 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring consistent dimensional accuracy and reliable performance. The external hex drive accommodates standard wrenching tools for secure installation. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and restricted substance compliance for global industrial applications.