S-90521A267 1 1/8"-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 hex profile for enhanced stability in high-vibration applications
- Exceptional tensile strength from ASTM Grade 2H steel construction, providing reliable performance under heavy loads
- Precision fine threading (1 1/8"-12 UNF) ensures secure, vibration-resistant connections in critical assemblies
- Consistent thread engagement with Class 2B fit maintains uniform clamping force across multiple installations
- Industry-standard compliance with ASME B18.2.2 specifications guarantees dimensional accuracy and interchangeability
- Environmental responsibility through RoHS 3 and REACH compliance, meeting global regulatory requirements
- Optimized wrench clearance with 1 13/16" width facilitates efficient installation in confined spaces
Professional Applications & Engineering Value
This extra wide hex nut delivers critical engineering advantages for demanding industrial applications where vibration resistance and load integrity are paramount. The ASTM Grade 2H steel construction provides exceptional proof load capacity, making it ideal for structural connections, heavy machinery, and high-pressure systems. The fine UNF thread (1 1/8"-12) offers superior resistance to loosening under dynamic loads compared to coarse-thread alternatives, while the Class 2B thread fit ensures consistent torque values and reliable sealing performance. Engineered to ASME B18.2.2 standards, this heavy-duty fastener maintains dimensional consistency across replacement and maintenance cycles, reducing downtime in manufacturing, construction, and equipment assembly operations.
Specification Summary & Compliance
Manufactured to exacting ASME B18.2.2 dimensional standards with Class 2B thread fit tolerance for precision engagement. The UNF fine thread (1 1/8"-12) provides superior vibration resistance in inch-system applications. Compliant with ASTM A194 material specifications and ASTM Grade 2H strength requirements for high-performance applications. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards.
