S-90670A031 3/8"-16 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 from 6061 aluminum construction for extended service life in harsh environments
- Reliable coarse thread engagement with UNC 3/8"-16 configuration for faster assembly and reduced cross-threading risk
- Precision Class 2B thread fit ensuring consistent mating with male threaded components
- Standard external hex drive design providing excellent tool accessibility and torque transmission
- Full ASME B18.2.2 compliance guaranteeing dimensional accuracy and interchangeability
- Environmental regulation compliance with RoHS 3 and REACH standards for global market acceptance
- Optimized 9/16" width and 21/64" height delivering ideal strength-to-weight ratio for weight-sensitive applications
Professional Applications & Engineering Value
This 3/8"-16 UNC hex nut delivers exceptional engineering value through its 6061 aluminum composition and coarse thread spacing, specifically designed to address common industrial challenges. The right-hand thread direction and external hex drive configuration enable rapid installation in machinery, conveyor systems, and structural frameworks where vibration resistance and quick maintenance access are critical. The Class 2B thread fit provides optimal clearance for smooth engagement with UNC threaded bolts, reducing galling risks in aluminum-to-aluminum connections. Ideal for aerospace components, automotive assemblies, and electronic enclosures, this standard profile hex nut offers a lightweight yet durable fastening solution that maintains integrity under thermal cycling and moderate load conditions.
Specification Summary & Compliance
Manufactured to exact ASME B18.2.2 specifications with Class 2B thread fit tolerances ensuring precise dimensional accuracy. The UNC 3/8"-16 coarse thread configuration adheres to standardized inch system requirements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted substances. Dimensions include 9/16" width across flats and 21/64" height for consistent performance in industrial fastening applications.
