S-96966A740 5/16"-18 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Quick manual installation with large spade head design (7/8" width) for tool-free tightening and adjustment
• Superior corrosion resistance through zinc-plated steel construction for extended service life in demanding environments
• Reliable thread engagement with UNC coarse threads ensuring rapid assembly and reduced cross-threading risks
• Consistent performance maintained through Class 2A thread fit for precise tolerance in industrial applications
• High mechanical strength delivering 40,000 psi tensile strength and Rockwell B55 hardness for heavy-duty fastening requirements
• Maximum grip length with fully threaded 1/2" shank providing secure attachment across the entire fastener length
• Environmental compliance meeting RoHS 3 standards for restricted substance control in regulated industries

Professional Applications & Engineering Value

This zinc-plated steel thumb screw addresses critical needs in industrial maintenance, machinery access panels, and electronic enclosures where frequent adjustments are required. The spade head design (11/16" height) enables rapid hand-tightening without tools, significantly reducing downtime during service operations. The UNC coarse thread (5/16"-18) with Class 2A fit ensures consistent engagement in various materials while resisting vibration-induced loosening. The fully threaded configuration provides maximum thread contact for secure fastening in applications ranging from equipment guards to electrical cabinets. With 40,000 psi tensile strength and corrosion-resistant zinc plating, this thumb screw delivers reliable performance in manufacturing, automation, and maintenance environments where durability and quick access are paramount.

Specification Summary & Compliance

This heavy-duty thumb screw features precise Class 2A thread fit according to UNC standards, ensuring dimensional accuracy and reliable performance. The 5/16"-18 coarse thread configuration provides optimal engagement in various industrial applications. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, guaranteeing environmental compliance for restricted substances. The component maintains consistent Rockwell B55 hardness and 40,000 psi tensile strength throughout its service life, meeting rigorous industrial fastening requirements.