S-94859A133 3/8"-16 Square Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from black zinc-plated steel coating, extending service life in harsh industrial environments
• Superior thread engagement with Class 2B thread fit ensuring reliable fastening and vibration resistance
• Quick installation capability through external square drive design that prevents tool slippage during high-torque applications
• Optimized for heavy-duty use with coarse UNC threads providing excellent debris clearance and reduced cross-threading risks
• Secure anti-rotation performance thanks to square geometry that resists turning in assembled applications
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for international projects
• Precise dimensional compatibility with 5/8" width and 1/4" height ensuring consistent fit with standard components

Professional Applications & Engineering Value

This heavy-duty square nut delivers exceptional value in industrial applications where vibration resistance and durability are critical. The black zinc-plated steel construction provides superior corrosion protection for outdoor equipment, agricultural machinery, and construction applications exposed to moisture and chemicals. The 3/8"-16 UNC coarse thread design ensures rapid assembly in high-volume production environments while maintaining secure fastening under dynamic loads. The external square drive allows for positive tool engagement, eliminating rounding issues common with standard nuts during maintenance operations. Engineered for Class 2B thread fit, this square nut maintains precise tolerances for consistent performance in automotive, manufacturing, and structural applications where reliability cannot be compromised.

Specification Summary & Compliance

This square nut features 3/8"-16 UNC coarse threads with Class 2B thread fit per ASME B18.2.2 standards, ensuring proper engagement with mating components. Dimensional specifications include 5/8" width and 1/4" height with right-hand thread direction. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental standards for hazardous substance restrictions. Manufactured from high-strength steel with black zinc plating for consistent performance in demanding industrial applications.