S-90876A600 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Easy manual installation and removal with standard wing profile for tool-free operation in tight spaces
• Superior corrosion resistance through zinc-plated steel construction for extended service life in harsh environments
• Reliable thread engagement with Class 2B fit UNC coarse threads ensuring consistent fastening performance
• Optimized grip surface featuring 1 1/8" width and 3/4" height for secure handling during adjustments
• Broad compatibility with 1/4"-20 UNC male threads commonly used in industrial equipment and machinery
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global market acceptance
• Time-saving assembly with right-hand threading following industry-standard rotation direction

Professional Applications & Engineering Value

This zinc-plated steel thumb nut solves critical challenges in maintenance-heavy environments where frequent adjustments are required. The standard wing profile enables rapid installation without tools, significantly reducing downtime in equipment servicing applications. Engineered with UNC coarse threads and Class 2B thread fit, it maintains reliable clamping force while resisting vibration-induced loosening in machinery, electrical enclosures, and structural assemblies. The 5/8" base diameter provides stable seating surface distribution, while the zinc plating offers essential corrosion protection for industrial settings exposed to moisture, chemicals, or outdoor conditions. This combination of easy manual operation and durable construction makes it ideal for applications requiring both accessibility and long-term reliability.

Specification Summary & Compliance

This thumb nut features 1/4"-20 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring proper interchangeability and consistent performance. The right-hand thread direction follows conventional assembly practices. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for hazardous substance restrictions. Dimensional specifications include 5/8" base diameter, 1 1/8" width across wings, and 3/4" height for optimal handling characteristics.