S-99862A440 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Tool-free installation and adjustment with wing-shaped head design for maximum hand grip in tight spaces
• Superior corrosion resistance through premium zinc alloy construction for extended service life in harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance in industrial applications
• Quick assembly capabilities through coarse UNC thread spacing reducing installation time
• Secure fastening performance with 9/16" base diameter providing stable mounting surface
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Right-hand thread compatibility with standard 1/4"-20 UNC specifications for broad equipment integration

Professional Applications & Engineering Value

This zinc alloy thumb nut delivers exceptional value in industrial settings where tool-free fastening is essential. The wing-shaped head profile provides superior torque application without specialized tools, significantly reducing maintenance downtime in equipment access panels, machinery guards, and adjustable components. The coarse UNC thread spacing (1/4"-20) enables rapid installation while maintaining secure holding power, particularly valuable in vibration-prone environments. Manufactured from premium zinc alloy, this fastener resists corrosion in demanding conditions while the Class 2B thread fit ensures consistent engagement with mating components. The substantial 9/16" base diameter distributes clamping force effectively, preventing surface damage and maintaining joint integrity across repeated adjustment cycles.

Specification Summary & Compliance

This thumb nut features 1/4"-20 UNC coarse threads with Class 2B thread fit for standard industrial compatibility. Dimensions include 9/16" base diameter, 1 1/4" width, and 5/8" height with right-hand thread direction. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for global manufacturing applications with strict regulatory requirements.