S-94785A511 4-40 Square Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable fastening and vibration resistance
• Quick installation capability through external square drive design for efficient assembly with standard tools
• Enhanced durability with coarse UNC thread spacing that resists cross-threading and wear
• Environmental compliance meeting RoHS 3 and REACH standards for safe industrial usage
• Right-hand thread orientation providing standard directional fastening for universal compatibility
• Compact 1/4" width profile enabling installation in space-constrained applications

Professional Applications & Engineering Value

This 4-40 UNC square nut delivers exceptional engineering value through its 18-8 stainless steel composition, offering superior corrosion resistance that prevents degradation in demanding industrial environments. The Class 2B thread fit ensures precise mating with mating components, reducing the risk of loosening under vibration while the coarse thread spacing provides faster assembly and disassembly in maintenance operations. The external square drive design allows for secure wrench engagement, preventing slippage during high-torque applications. These features make it ideal for machinery, electrical enclosures, and structural assemblies where corrosion resistant fasteners are critical for long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance and UNC coarse thread specifications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand thread direction and standardized 1/4" width with 3/32" height dimensions for consistent performance across industrial applications.