S-90165A528 1/2"-13 x 5 1/16" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual operation with large 2 1/2" four-arm head for superior grip and torque application without tools
• Enhanced durability and corrosion resistance from the Black-Oxide Steel finish and Rockwell C40 hardness
• Secure and stable fastening with a removable swivel tip that accommodates up to 10° angular misalignment
• High-strength performance backed by 180,000 psi tensile strength for demanding industrial applications
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fit and easy assembly
• Versatile full-length threading for maximum adjustability and holding power across the entire 5 1/16" length
• Compliance with environmental standards including RoHS 3 and REACH for safe, regulated use

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common industrial challenges where frequent adjustments, high clamping force, and tool-free operation are critical. The Black-Oxide Steel construction provides excellent wear and corrosion resistance, extending service life in harsh environments. The removable swivel tip with a 10° maximum swivel angle prevents damage to contact surfaces and compensates for minor misalignments, making it ideal for machinery, fixtures, and access panels. Its 1/2"-13 UNC coarse thread and Class 2A fit ensure quick, reliable installation and removal, reducing downtime in maintenance and assembly lines. With a fully threaded design and substantial 180,000 psi tensile strength, it delivers consistent performance in clamping, positioning, and securing applications across manufacturing, automotive, and electronics sectors.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and interchangeability. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of restricted hazardous substances. Key specifications include a 1/2"-13 coarse thread, right-hand thread direction, and a 5 1/16" length with full threading for reliable fastening performance.