S-97568A591 5/16"-18 x 2" Thumb Screws

Key Features & Benefits at a Glance

• Hand-tightened efficiency with 1 3/4" wing head design for maximum torque application without tools
• Enhanced corrosion resistance through zinc-plated iron construction for extended service life in demanding environments
• Reliable coarse threading with UNC 5/16"-18 pattern and Class 2A fit for secure fastening in various materials
• Full 2" threaded length provides maximum engagement depth and versatile installation options
• Right-hand thread orientation ensures intuitive installation following standard industry practices
• Regulatory compliance with RoHS 3 and REACH standards for safe use in industrial applications
• Precision manufacturing with head diameter tolerance of ±0.0156" for consistent performance

Professional Applications & Engineering Value

This zinc-plated iron thumb screw delivers exceptional value in industrial settings where frequent adjustments and tool-free operation are critical. The UNC coarse thread profile ensures rapid installation and removal while maintaining secure fastening in wood, plastic, and soft metals. The substantial 1 3/4" wing head provides superior grip for hand-tightening applications, eliminating the need for tools in equipment panels, access covers, and machinery guards. The zinc plating offers reliable protection against oxidation and corrosion, making these thumb screws ideal for manufacturing environments, electronic enclosures, and outdoor equipment where moisture resistance is essential. The fully threaded design allows for maximum thread engagement across the entire 2" length, ensuring stable connections in vibration-prone applications.

Specification Summary & Compliance

This heavy-duty thumb screw features 5/16"-18 UNC coarse threads with Class 2A thread fit for standard industrial applications. Manufacturing precision is maintained with head diameter tolerance of -0.0156" to +0.0156". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial procurement.