S-93005A554 5/16"-18 x 2 1/2" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Effortless hand-tightening with a large four-arm thumb head (1 1/2" width) for superior grip and fast adjustment without tools.
- Exceptional durability and corrosion resistance thanks to the black-oxide steel finish, extending service life in demanding environments.
- High-strength performance with a tensile strength of 180,000 psi and Rockwell C40 hardness, ensuring reliable fastening under heavy loads.
- Quick and secure coarse threading with 5/16"-18 UNC threads and Class 2A fit for easy starts and robust engagement in various materials.
- Versatile full-thread design along the 2 1/2" length and extended tip for consistent holding power and easier alignment in assembly.
- Reliable compliance with RoHS 3 and REACH regulations, making it suitable for global industrial and commercial applications.
Professional Applications & Engineering Value
This heavy-duty thumb screw is engineered to solve common industrial challenges, such as the need for rapid, tool-free maintenance and adjustments on machinery, panels, and fixtures. The black-oxide steel construction provides enhanced corrosion resistance, reducing downtime in humid or corrosive settings. Its coarse UNC threads and Class 2A thread fit ensure quick installation and secure fastening, minimizing cross-threading risks. The four-arm head design offers a comfortable, high-torque grip, ideal for applications in electronics, automotive, and manufacturing where repeated access is required. With a fully threaded shank and extended tip, it delivers consistent clamping force and easier insertion, enhancing assembly efficiency and reliability in industrial thumb screw uses.
Specification Summary & Compliance
This thumb screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy and reliable performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and suitability for various industrial applications. Manufactured from high-strength steel with a black-oxide finish, it maintains consistent thread geometry and mechanical properties as specified.
