S-90521A278 1 1/4"-12 ASME B18.2.2, ASTM A194 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 load distribution with extra wide profile for enhanced stability in high-vibration applications
- Exceptional strength performance through ASTM Grade 2H certification for heavy-duty industrial use
- Precise thread engagement with Class 2B fit ensuring reliable fastening in critical assemblies
- Optimized for fine-thread applications with 1 1/4"-12 UNF configuration providing superior resistance to loosening
- Full regulatory compliance with RoHS 3 and REACH standards for global industrial deployment
- Standardized dimensions per ASME B18.2.2 specifications ensuring interchangeability and easy replacement
- Durable steel construction offering excellent corrosion resistance and long service life
Professional Applications & Engineering Value
This heavy-duty hex nut delivers exceptional engineering value through its ASTM Grade 2H steel construction and extra wide profile, specifically designed to address common industrial challenges. The 1 1/4"-12 UNF fine thread configuration provides superior vibration resistance in machinery, construction equipment, and structural applications where Class 2B thread fit ensures precise engagement without galling. The inch system measurement and ASME B18.2.2 compliance guarantee perfect compatibility with existing industrial fastening systems, while the right-hand thread direction maintains standard installation procedures. This nut solves critical issues of joint integrity in high-stress environments through its optimized thread spacing and material strength, making it ideal for demanding applications requiring reliable, long-term fastening solutions.
Specification Summary & Compliance
Manufactured to exacting Class 2B thread fit tolerances with UNF thread type specifications, this hex nut maintains dimensional accuracy per ASME B18.2.2 standards. The fastener meets ASTM A194 material requirements and carries ASTM Grade 2H strength classification. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility, while the 2" width and 1 7/32" height provide standardized dimensions for consistent performance across industrial applications.
