S-90670A255 9/16"-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 6061 aluminum construction for extended service life in demanding environments
- Precision Class 2B thread fit ensures smooth assembly and reliable fastening performance
- ASME B18.2.2 compliance guarantees dimensional accuracy and interchangeability with standard components
- Coarse UNC threading provides faster installation and reduced cross-threading risks
- External hex drive design offers excellent torque transmission and tool accessibility
- Environmental compliance with RoHS 3 and REACH standards for safe industrial use
- Standard profile configuration ensures compatibility with existing tooling and replacement parts
Professional Applications & Engineering Value
This 9/16"-12 UNC hex nut delivers exceptional engineering value through its 6061 aluminum composition and precision manufacturing. The coarse thread design significantly reduces installation time while minimizing the risk of cross-threading in high-volume assembly operations. The Class 2B thread fit provides optimal clearance for smooth engagement without compromising joint integrity, making it ideal for applications requiring repeated disassembly and reassembly. The external hex drive configuration ensures maximum torque application with standard tools, while the aluminum construction offers excellent strength-to-weight ratio for aerospace, automotive, and machinery applications where weight reduction is critical without sacrificing performance.
Specification Summary & Compliance
Manufactured to ASME B18.2.2 specifications with Class 2B thread fit tolerance for UNC coarse threading (9/16"-12). Dimensions include 7/8" width across flats and 31/64" height. Fully compliant with RoHS 3 (2015/863/EU) with exemption 6(b)-II and REACH (EC 1907/2006) standards, ensuring environmental responsibility while maintaining aluminum alloy machining performance. Right-hand thread direction with standard hex nut profile for universal industrial compatibility.
