S-99961A330 8-32 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Reliable reverse-thread security with left-hand threading that prevents loosening in counter-rotating applications
• Optimized torque transmission through standard external hex drive design for secure installation with common tools
• Consistent thread engagement with UNC coarse threading and Class 2B fit ensuring smooth assembly and vibration resistance
• Proven mechanical strength meeting Grade 2 requirements for dependable performance in medium-duty applications
• Environmental compliance assurance with RoHS 3 and REACH standards for safe, sustainable industrial use
• Universal compatibility with inch measurement system components for seamless integration into existing assemblies

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel hex nut delivers critical performance in applications requiring left-hand thread functionality, particularly where reverse rotation is present. The UNC coarse thread profile with Class 2B fit ensures reliable engagement even in high-vibration environments, while the external hex drive provides excellent torque transmission during installation. The zinc plating offers essential corrosion protection for industrial equipment, machinery, and automotive applications where exposure to moisture and chemicals is common. Engineered specifically for left-hand fastening systems, this nut prevents unintended loosening in rotating assemblies that turn counterclockwise, making it ideal for specialized machinery, maintenance applications, and safety-critical connections where standard right-hand threads would compromise system integrity.

Specification Summary & Compliance

This 8-32 UNC left hand thread hex nut features coarse thread spacing with precise Class 2B thread fit tolerances for consistent performance. Dimensions include 11/32" width and 1/8" height, manufactured to inch measurement system standards. The fastener meets Grade 2 strength classification requirements and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors while maintaining quality and reliability standards.