S-95479A184 1 1/8"-12 ASME B18.2.2 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black oxide steel coating, extending service life in harsh industrial environments
- Exceptional load-bearing capacity from Grade 5 strength classification, ensuring reliable performance under high-stress conditions
- Precise thread engagement with Class 2B fit and UNF fine threads, minimizing vibration-induced loosening in critical assemblies
- Standardized dimensional compliance per ASME B18.2.2, guaranteeing interchangeability and simplified inventory management
- Optimized wrench clearance with 1 11/16" width and standard external hex drive, enabling efficient installation in confined spaces
- Environmental regulation compliance with RoHS 3 and REACH standards, ensuring safe usage across regulated industries
- Right-hand thread design with consistent 1" height profile, providing familiar installation patterns for maintenance crews
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this Grade 5 hex nut combines black oxide steel durability with precision UNF fine threads to solve critical fastening challenges. The Class 2B thread fit maintains consistent clamping force in high-vibration environments like heavy machinery and automotive assemblies, while the ASME B18.2.2 compliance ensures dimensional reliability across replacement and OEM scenarios. The corrosion-resistant black oxide surface treatment protects against industrial contaminants, making it ideal for construction equipment, manufacturing systems, and transportation infrastructure where fastener integrity directly impacts operational safety and maintenance intervals.
Specification Summary & Compliance
This 1 1/8"-12 UNF hex nut maintains Class 2B thread tolerances with standardized fine thread spacing per unified thread specifications. Manufacturing conforms to ASME B18.2.2 dimensional requirements, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Grade 5 strength classification confirms consistent mechanical properties for industrial duty cycles.
