S-90670A155 1/4"-28 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from 6061 aluminum construction, ideal for harsh industrial environments
• Precise Class 2B thread fit ensures reliable engagement and vibration resistance in critical assemblies
• Fine UNF threading (1/4"-28) provides enhanced load distribution and superior sealing capabilities
• ASME B18.2.2 compliance guarantees dimensional accuracy and interchangeability with standard components
• External hex drive design enables easy installation and removal with common wrench tools
• REACH and RoHS 3 compliance meets international environmental regulations for industrial applications
• Optimized 7/16" width and 7/32" height delivers balanced strength-to-weight ratio for space-constrained installations

Professional Applications & Engineering Value

This 6061 aluminum hex nut with 1/4"-28 UNF fine thread configuration addresses critical engineering challenges in precision assemblies requiring both corrosion resistance and mechanical reliability. The fine thread spacing enhances load distribution across more thread contact points, reducing stress concentration in vibration-prone applications such as aerospace components, electronic enclosures, and precision machinery. The external hex drive style ensures compatibility with standard tools while the Class 2B thread fit maintains consistent clamping force in dynamic loading conditions. Manufactured to ASME B18.2.2 specifications, these nuts provide dependable performance in applications where weight reduction without compromising strength is essential, particularly in transportation equipment and marine environments where aluminum's natural oxide layer provides lasting protection.

Specification Summary & Compliance

This hex nut features precision 1/4"-28 UNF fine threads with Class 2B thread fit tolerance, ensuring consistent engagement with mating components. Manufactured in accordance with ASME B18.2.2 standards with standard hex profile dimensions of 7/16" width and 7/32" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) standards with applicable exemption for lead as an alloying element in aluminum machining processes, meeting international environmental and safety requirements for industrial applications.