S-95479A113 1/4"-28 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide steel construction for extended service life in demanding environments
• Precise fine thread engagement with UNF 1/4"-28 threading and Class 2B fit ensuring vibration-resistant, secure fastening
• High-strength performance meeting Grade 5 specifications for reliable load-bearing capacity in structural applications
• Standard external hex design providing universal tool compatibility and efficient installation with common wrenches
• Industry-standard compliance with ASME B18.2.2 specifications guaranteeing dimensional accuracy and interchangeability
• Environmental regulation adherence through RoHS 3 and REACH compliance for global manufacturing acceptance
• Optimized size profile with 7/16" width and 7/32" height offering balanced strength-to-weight ratio

Professional Applications & Engineering Value

This 1/4"-28 UNF hex nut delivers exceptional engineering value through its Grade 5 black oxide steel construction, specifically engineered to address common industrial fastening challenges. The fine thread spacing combined with Class 2B thread fit provides superior resistance to vibration loosening in machinery, automotive assemblies, and structural frameworks where dynamic loads are present. The external hex drive design ensures quick installation and removal with standard tools, reducing assembly time in production environments. The black oxide surface treatment offers enhanced corrosion protection without compromising dimensional tolerances, making these ASME B18.2.2 compliant nuts ideal for OEM manufacturing, maintenance operations, and heavy equipment applications requiring dependable, long-lasting fastening solutions.

Specification Summary & Compliance

This hex nut maintains precise Class 2B thread fit tolerances with 1/4"-28 UNF fine threading and right-hand thread direction. Manufacturing strictly adheres to ASME B18.2.2 specifications for dimensional consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental standards for industrial fastener applications. Grade 5 strength classification ensures mechanical performance reliability across demanding applications.