S-90165A522 1/2"-13 x 2 1/16" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a large four-arm thumb head (2 1/2" width, 1 1/8" height) for quick assembly and disassembly without tools.
• Exceptional durability and corrosion resistance provided by the black-oxide steel finish, extending service life in demanding environments.
• High mechanical strength with a tensile strength of 180,000 psi and Rockwell C40 hardness to withstand heavy loads and prevent stripping.
• Secure and adaptable fastening thanks to the removable swivel tip, which accommodates misalignment up to 10° and protects surfaces.
• Reliable thread engagement with a fully threaded Class 2A UNC coarse thread (1/2"-13) ensuring consistent performance and easy installation.
• Broad industrial compliance meeting RoHS 3 and REACH standards for safe use in regulated applications.
• Versatile length and design (2 1/16" length) suitable for a wide range of panel, machinery, and equipment fastening needs.

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to solve common industrial fastening challenges, such as the need for rapid access and robust holding power. The removable swivel tip with a 10° maximum angle compensates for minor misalignments during installation, reducing stress on threads and preventing damage to components. Its fully threaded UNC coarse thread design ensures quick engagement and high resistance to vibration loosening, making it ideal for industrial machinery, electronic enclosures, and heavy-duty equipment that require frequent adjustments. The combination of high tensile strength (180,000 psi) and corrosion-resistant finish provides long-term reliability, minimizing maintenance downtime and replacement costs in harsh operational environments.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent tolerance and a 1/2"-13 UNC coarse thread for optimal performance. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met. The product meets general industry specifications for inch-system fasteners, with full threading and a right-hand thread direction for standard applications.