S-92239A225 5/16"-18 Thumb Nuts
Thumb Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Effortless hand-tightening with wing-style head design for quick assembly and disassembly without tools
- Enhanced load distribution from the 7/8" flat flange, reducing surface pressure and preventing material damage
- Superior corrosion resistance with zinc alloy construction for long-lasting performance in harsh industrial environments
- Reliable thread engagement with 5/16"-18 UNC coarse threads and Class 2B fit, ensuring secure fastening and vibration resistance
- Durable mechanical properties from zinc alloy, providing excellent strength-to-weight ratio for repeated use
- Right-hand thread compatibility for standard applications, simplifying installation in common assembly setups
- Compliance with global safety standards including REACH and RoHS 3, ensuring safe use in regulated industries
Professional Applications & Engineering Value
This zinc alloy flanged thumb nut addresses critical challenges in industrial maintenance and equipment assembly where frequent adjustments are required. The wing-style head enables rapid hand-tightening, eliminating the need for tools in confined spaces or during field service. The integrated flat flange distributes clamping force over a wider area, preventing damage to soft materials and maintaining joint integrity under vibration. With UNC coarse threads and Class 2B thread fit, this component ensures reliable engagement in high-vibration applications such as machinery guards, electrical enclosures, and automotive assemblies. The corrosion-resistant zinc alloy construction makes it suitable for outdoor equipment and manufacturing environments where exposure to moisture and chemicals is common.
Specification Summary & Compliance
This thumb nut features 5/16"-18 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring proper clearance and assembly compatibility. The 7/8" flat flange provides stable bearing surface contact. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) directives, confirming adherence to hazardous substance restrictions for industrial safety and environmental protection.
