S-97008A730 5/16"-18 x 2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual tightening and loosening with the large 3/4" high spade head, eliminating the need for tools in frequent adjustment applications.
• Superior corrosion resistance provided by the zinc-plated steel finish, extending the component's service life in various industrial environments.
• High-strength performance under load with a tensile strength of 40,000 psi and Rockwell B55 hardness, ensuring reliable fastening in demanding situations.
• Quick and easy installation thanks to the coarse UNC thread and Class 2A fit, which facilitates faster assembly and reduces cross-threading risks.
• Enhanced stability and load distribution from the integrated flange, which acts as a built-in washer to prevent loosening under vibration.
• Full-length gripping power with a 2" fully threaded design, providing maximum engagement and holding strength along the entire shank.
• Compliance with environmental and safety standards by being RoHS 3 compliant, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This zinc-plated steel thumb screw is engineered to solve critical challenges in industrial maintenance, machinery, and electronic enclosures. The spade head design allows for rapid manual adjustments without tools, significantly reducing downtime for panel access, jig setups, or equipment calibration. The coarse UNC thread and Class 2A fit ensure quick engagement and high resistance to vibration-induced loosening, a common failure point in dynamic environments. The robust 40,000 psi tensile strength and Rockwell B55 hardness provide the durability needed for heavy-duty applications, from securing access panels on industrial machinery to fastening components in automotive assemblies. The fully threaded and flanged construction offers superior clamping force and stability, making it an ideal choice for engineers seeking reliable, tool-free fastening solutions.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a 5/16"-18 thread size and a Class 2A thread fit, ensuring precise dimensional accuracy and interchangeability. It is manufactured from zinc-plated steel and is fully compliant with RoHS 3 (2015/863/EU) regulations, confirming its suitability for use in environments with strict environmental and safety requirements.