S-90670A030 5/16"-18 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 6061 aluminum construction, ideal for harsh industrial environments
• Reliable mechanical strength for heavy-duty applications, ensuring long-term fastener integrity
• Precision Class 2B thread fit provides smooth assembly and secure connections with mating bolts
• Standard UNC coarse threading enables quick installation and reduced cross-threading risks
• ASME B18.2.2 compliance guarantees dimensional accuracy and interchangeability
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence
• External hex drive design offers excellent tool engagement for easy tightening and removal

Professional Applications & Engineering Value

This 5/16"-18 UNC hex nut manufactured from 6061 aluminum delivers exceptional performance in demanding industrial settings. The coarse thread design combined with Class 2B thread fit ensures rapid assembly while minimizing the risk of cross-threading during high-volume production. The external hex drive provides superior torque transmission for secure fastening in machinery, equipment frames, and structural applications. As an ASME B18.2.2 compliant component, it offers guaranteed dimensional consistency for replacement and maintenance operations. The aluminum construction provides excellent weight savings without compromising strength, making it ideal for aerospace, automotive, and electronics applications where corrosion resistance and reduced mass are critical engineering considerations.

Specification Summary & Compliance

This hex nut features 5/16"-18 UNC coarse threads with Class 2B thread fit per ASME standards. Dimensions include 1/2" width and 17/64" height with right-hand thread direction. Manufactured to meet ASME B18.2.2 specifications for standard hex nuts. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries.