S-90876A655 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Superior hand-tightening capability with standard wing profile for quick installation and removal without tools
• Enhanced corrosion resistance through zinc-plated steel construction for extended service life in harsh environments
• Reliable thread engagement with 1/4"-20 UNC coarse threads ensuring secure fastening in industrial applications
• Optimized torque transmission through 7/8" base diameter providing maximum gripping surface for hand tightening
• Consistent dimensional accuracy with Class 2B thread fit guaranteeing proper mating with corresponding male threads
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Right-hand thread design for standard clockwise tightening convention familiar to all operators

Professional Applications & Engineering Value

This zinc-plated steel thumb nut delivers exceptional value in applications requiring frequent adjustments or quick assembly/disassembly. The standard wing profile provides substantial leverage for hand-tightening operations, eliminating the need for tools in maintenance scenarios and reducing downtime. Engineered with 1/4"-20 UNC coarse threads, this component maintains reliable performance in vibrating environments where fine threads might loosen. The zinc plating offers sacrificial protection against corrosion, making it suitable for industrial equipment, machinery guards, electrical enclosures, and outdoor applications. The 7/8" base diameter distributes clamping force evenly, preventing damage to soft materials while ensuring secure fastening in assembly line operations, prototype development, and field service applications.

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 dimensional accuracy and interchangeability. The component maintains right-hand thread direction with standard inch measurements. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for hazardous substance restrictions. Physical dimensions include 7/8" base diameter, 1-1/2" width across wings, and 5/8" height for consistent performance across industrial applications.