S-96966A742 5/16"-18 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Quick manual installation and removal with the large spade head design, eliminating the need for tools in frequent adjustment applications
• Superior corrosion resistance provided by the zinc-plated steel finish, extending service life in various industrial environments
• High mechanical strength and durability from Rockwell B55 hardness and 40,000 PSI tensile strength, resisting deformation under load
• Excellent grip and holding power due to the fully threaded design and coarse UNC thread, ensuring secure fastening in demanding conditions
• Reliable and consistent thread engagement with Class 2A thread fit, facilitating smooth assembly and reducing cross-threading risks
• Wide compatibility with standard 5/16"-18 UNC coarse threaded components, simplifying sourcing and replacement
• Ergonomic right-hand threading for intuitive, standard-direction tightening in common industrial and equipment applications

Professional Applications & Engineering Value

This zinc-plated steel thumb screw is engineered to solve critical challenges in industrial settings where tool-less access and robust performance are paramount. The spade head offers a large surface area for hand-tightening, ideal for panels, access doors, and machinery guards that require regular maintenance. The UNC coarse thread and Class 2A fit provide rapid installation and reliable clamping force, reducing assembly time while minimizing the risk of stripping in softer materials or high-vibration environments. With a tensile strength of 40,000 PSI and Rockwell B55 hardness, it maintains integrity under mechanical stress, making it a dependable choice for heavy-duty applications in manufacturing, automotive, and electronic enclosures where durability and corrosion resistance are essential.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is fully threaded with a 5/16"-18 thread size, right-hand direction, and a length of 3/4". Manufactured from zinc-plated steel, it meets general industry specifications for mechanical fasteners and is compliant with RoHS and REACH environmental standards, ensuring safe use in various industrial and commercial applications.