S-90165A526 1/2"-13 x 3 9/16" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a large four-arm thumb head (2 1/2" width) for superior grip and torque without tools.
• Enhanced durability and corrosion resistance thanks to the black-oxide steel finish, extending service life in demanding environments.
• Reliable, high-strength fastening with a 180,000 psi tensile strength and Rockwell C40 hardness to withstand significant loads and stress.
• Versatile and secure swivel tip that is removable and allows for a 10° maximum angle, preventing damage to contact surfaces and ensuring even pressure distribution.
• Precise and easy engagement with 1/2"-13 UNC Class 2A coarse threads, designed for quick assembly and disassembly in industrial applications.
• Full-length threading provides maximum adjustability and holding power along the entire 3 9/16" length.
• Compliant with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global industrial supply chains.

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common industrial fastening challenges where tool-less operation, high strength, and component protection are critical. The black-oxide steel construction offers excellent resistance to rust and wear, making it ideal for machinery, fixtures, and access panels in harsh workshop or outdoor conditions. The removable swivel tip is a key feature, preventing marring or indentation on finished surfaces and accommodating minor misalignments with its 10° swivel capability. Combined with the coarse UNC thread, it ensures rapid and secure clamping for frequent adjustments in applications like jigs, industrial enclosures, and production equipment, reducing assembly time and minimizing the risk of stripped threads.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, featuring a 1/2"-13 UNC coarse thread with a Class 2A thread fit for consistent and reliable engagement. The manufacturing and material specifications ensure a tensile strength of 180,000 psi and a Rockwell C40 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial components.