S-90499A042 1 3/8"-6 Hex Nuts

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 strength rating for critical heavy-duty applications
• Superior thread engagement through Class 2B fit ensuring reliable fastening in high-vibration environments
• Quick installation efficiency with coarse UNC threads reducing assembly time in industrial settings
• Exceptional durability from carbon steel construction resisting wear in demanding mechanical systems
• Standard external hex drive design enabling compatibility with common wrenching tools
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
• Precision dimensional consistency with 2 1/16" width and 1 11/64" height for uniform performance

Professional Applications & Engineering Value

This Grade 8 steel hex nut delivers critical performance in heavy machinery, structural assemblies, and high-stress equipment where failure isn't an option. The 1 3/8"-6 UNC coarse thread configuration provides superior resistance to vibrational loosening while enabling rapid installation in time-sensitive industrial maintenance. Manufactured with Class 2B thread fit precision, this fastener maintains consistent clamping force in dynamic load conditions. The carbon steel construction offers optimal strength-to-weight ratio for applications ranging from construction equipment to manufacturing machinery, while the standard external hex drive ensures compatibility with existing tool inventories. These engineering characteristics make it ideal for replacing inferior fasteners in critical joints subject to extreme mechanical stress.

Specification Summary & Compliance

This heavy-duty hex nut maintains Class 2B thread fit tolerances per UNC standards, ensuring precise engagement with mating components. The inch system measurement provides 2 1/16" across flats and 1 11/64" height dimensions for consistent performance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety compliance. The Grade 8 strength classification guarantees mechanical properties suitable for the most demanding industrial applications, with right-hand thread orientation and external hex drive completing the specification profile.