S-92239A430 5/16"-18 Thumb Nuts

Key Features & Benefits at a Glance

• Effortless hand-tightening with wing-style head design for quick assembly and disassembly without tools
• Enhanced load distribution through 3/4" flat flange, reducing surface pressure and preventing material damage
• Superior corrosion resistance with zinc alloy construction for extended service life in harsh environments
• Reliable coarse threading (5/16"-18 UNC) enables faster installation and reduced cross-threading risks
• Precision thread fit with Class 2B tolerance ensuring consistent engagement and vibration resistance
• Right-hand thread orientation provides intuitive installation following standard industry practices
• Environmental compliance with RoHS 3 and REACH regulations for safe use across regulated industries

Professional Applications & Engineering Value

This zinc alloy flanged thumb nut addresses critical assembly challenges where tool access is limited or rapid maintenance is essential. The wing head design enables secure hand tightening while the flat flange creates a wider bearing surface that prevents loosening under vibration - a common failure point in machinery and equipment. The coarse UNC threading (5/16"-18) combined with Class 2B thread fit ensures quick starts and reliable engagement even in applications with slight misalignment. Manufactured from corrosion-resistant zinc alloy, this thumb nut maintains integrity in industrial environments where exposure to moisture, chemicals, or temperature variations would compromise standard fasteners. Ideal for frequent access panels, electrical enclosures, and machinery guards requiring both security and easy maintenance.

Specification Summary & Compliance

This flanged thumb nut features 5/16"-18 UNC coarse threading with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable performance. The 3/4" flat flange provides optimal load distribution while the right-hand thread direction follows conventional assembly practices. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material restrictions compliance for global industrial applications.