S-90475A040 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments
• Space-saving thin profile (7/16" height) for applications with limited clearance without compromising strength
• Precise Class 2B thread fit ensures smooth engagement and reliable fastening in critical assemblies
• Superior torque transmission through external hex drive design for secure installation with standard tools
• Optimized for fine-thread applications with UNF 12 TPI spacing, providing improved vibration resistance
• Full regulatory compliance with RoHS 3 and REACH standards for safe use across regulated industries
• Right-hand threading compatibility with standard rotation direction for intuitive installation processes

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 1 1/4"-12 UNF thin hex nut addresses critical challenges in machinery assembly, automotive systems, and heavy equipment manufacturing. The black-oxide steel construction provides essential corrosion protection where moisture and chemicals are present, while the fine UNF threads maintain clamping force under sustained vibration - a common failure point in dynamic systems. The thin hex nut profile solves space constraint issues in compact assemblies where standard nuts cannot fit, without sacrificing the load-bearing capacity required for structural connections. This combination of precision threading and corrosion-resistant properties makes it ideal for maintenance-critical applications where disassembly and reassembly are frequent, ensuring consistent performance through multiple service cycles.

Specification Summary & Compliance

This inch-system hex nut features 1 1/4"-12 UNF fine threads with Class 2B thread fit tolerance for precision engagement. Manufacturing adheres to UNF thread standards with dimensions of 1 3/4" width and 7/16" height. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (including 219 SVHC substances as of 07/08/2021), meeting international regulatory requirements for industrial components.