S-92239A200 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Effortless hand-tightening with wing-shaped head for quick assembly and disassembly without tools
• Enhanced load distribution through 7/8" flat flange design, reducing surface pressure and material stress
• Superior corrosion resistance with zinc alloy construction for extended service life in harsh environments
• Reliable coarse thread engagement with 1/4"-20 UNC threads and Class 2B fit for vibration resistance
• Right-hand threading compatibility with standard industrial equipment and fastening systems
• Regulatory compliance assurance meeting REACH and RoHS 3 standards for safe industrial use
• Optimized dimensional stability with precise 37/64" height and 1 1/8" width for consistent performance

Professional Applications & Engineering Value

This zinc alloy flanged thumb nut delivers exceptional engineering value across multiple industrial sectors. The wing-shaped head design enables rapid manual installation and removal, significantly reducing maintenance downtime in equipment requiring frequent access. The flat flange configuration provides superior bearing surface distribution, preventing surface damage and maintaining structural integrity under repeated tightening cycles. The UNC coarse thread pattern with Class 2B fit ensures reliable performance in high-vibration environments common in machinery, automotive, and electrical enclosure applications. The corrosion-resistant zinc alloy material maintains thread integrity and appearance in demanding conditions, while the right-hand thread direction offers compatibility with standard industrial components. This combination of features makes it ideal for applications where tool-free operation, durability, and consistent performance are critical.

Specification Summary & Compliance

This thumb nut features precision 1/4"-20 UNC coarse threads with Class 2B fit tolerance for reliable thread engagement. The manufacturing complies with standard inch measurement specifications, including the 7/8" flange diameter and 0.04" flange thickness. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental safety and regulatory adherence for industrial applications worldwide.