S-90866A029 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced manual torque application with standard wing profile for superior grip without tools
• Corrosion-resistant performance through zinc-plated steel construction in demanding environments
• Quick assembly/disassembly efficiency with right-hand coarse UNC threading for rapid installations
• Reliable thread engagement ensured by Class 2B fit for consistent fastening performance
• Optimal load distribution from 31/64" base diameter providing stable mounting surfaces
• Industrial safety compliance meeting RoHS 3 standards for regulated applications
• Universal compatibility with inch-system components through standardized 1/4"-20 threading

Professional Applications & Engineering Value

This zinc-plated steel thumb nut addresses critical industrial challenges where rapid maintenance and tool-free adjustments are essential. The UNC coarse thread configuration prevents cross-threading during quick assembly cycles, while the standard wing profile delivers exceptional torque transmission for hand-tightened applications. Engineers specify this component for equipment panels, temporary fixtures, and adjustment mechanisms where corrosion resistance and reliable fastening are paramount. The combination of Class 2B thread fit and right-hand direction ensures compatibility with existing industrial components while maintaining secure connections in vibration-prone environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerances and UNC coarse thread specifications (1/4"-20). Features 31/64" base diameter, 1-1/8" width, and 1/2" height dimensions in inch system measurements. Fully compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across industrial and commercial applications. The zinc-plated steel construction provides consistent performance within specified torque parameters.