S-98797A030 5/16"-18 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black protective coating for extended service life in harsh industrial environments
• High-strength Grade 5 construction ensures reliable performance under heavy loads and vibration
• Precision UNC coarse threading provides faster assembly and reduced cross-threading risk
• ASME B18.2.2 compliance guarantees dimensional accuracy and interchangeability
• Class 2B thread fit offers optimal clearance for smooth installation while maintaining secure fastening
• Standard external hex design enables easy installation with common wrench tools
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This Grade 5 hex nut with 5/16"-18 UNC coarse threading delivers exceptional engineering value for industrial applications requiring robust fastening solutions. The black corrosion-resistant coated steel construction addresses common failure points in manufacturing equipment, structural assemblies, and outdoor machinery by providing superior protection against rust and environmental degradation. The coarse thread profile ensures rapid installation in high-volume production environments while maintaining vibration resistance. Meeting ASME B18.2.2 specifications, these hex nuts provide reliable performance in automotive, construction, and heavy equipment applications where consistent dimensional accuracy and Class 2B thread fit prevent assembly issues and reduce maintenance downtime.

Specification Summary & Compliance

Manufactured to ASME B18.2.2 standards with 5/16"-18 UNC coarse threads and Class 2B thread fit for precise dimensional tolerance. The fastener meets Grade 5 strength requirements and features standard external hex drive (1/2" width) with 17/64" height. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.