S-93827A289 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength rating, ensuring reliable performance in high-stress industrial environments
• Superior corrosion resistance from zinc-flake coating, extending service life in harsh conditions and reducing maintenance costs
• Precise thread engagement with Class 2B fit and UNF fine threads, providing vibration resistance and preventing loosening under dynamic loads
• Optimized torque transmission through standard external hex drive design, allowing for efficient installation with common tools
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring safe use in regulated industries
• Heavy-duty construction with substantial 1 7/8" width and 1 1/16" height, delivering robust mechanical stability for critical connections
• Right-hand thread compatibility with standard inch system measurements, facilitating easy integration into existing assemblies

Professional Applications & Engineering Value

This Grade 8 hex nut delivers exceptional engineering value through its zinc-flake-coated steel construction and UNF fine thread design, specifically engineered to address common industrial challenges. The combination of high-strength material and advanced coating technology provides superior protection against corrosion and galvanic reactions in demanding environments such as heavy machinery, structural steel connections, and automotive assemblies. The fine thread spacing ensures maximum thread engagement and superior vibration resistance, preventing costly downtime from fastener failure. With its external hex drive profile and Class 2B thread fit, this industrial fastener enables precise torque application and reliable clamping force distribution, making it ideal for critical applications where joint integrity is paramount. The robust 1 1/4"-12 thread size accommodates substantial tensile loads while maintaining consistent performance across temperature variations and dynamic stress conditions.

Specification Summary & Compliance

This heavy-duty hex nut features precise Class 2B thread fit with UNF (Unified National Fine) thread standard and right-hand thread direction. Manufacturing complies with inch system specifications including 1 1/4"-12 thread size with fine thread spacing. The fastener meets Grade 8 strength classification requirements and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for use in regulated industries and international markets.