S-90113A130 8-32 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term fastening under stress
• Quick, tool-free installation and adjustment thanks to the external hex thumb head design, reducing assembly time and effort
• Secure thread engagement with UNC coarse threading and Class 2A thread fit, minimizing cross-threading risks in industrial applications
• Full-length threading ensures consistent grip along the entire 1/2" length, providing uniform clamping force
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications
• Right-hand thread direction for standard, intuitive tightening in common machinery and equipment setups

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 8-32 UNC thumb screw in 18-8 stainless steel addresses common challenges like corrosion, frequent adjustments, and high-vibration loosening. The external hex head allows for rapid manual or tool-assisted installation, reducing downtime in maintenance-heavy operations such as electrical enclosures, machinery panels, and prototyping fixtures. Its coarse threading and Class 2A thread fit ensure reliable performance in materials where fine threads might strip, while the fully threaded design distributes load evenly, preventing joint failure. Ideal for OEM and MRO applications, this screw offers a durable, compliant fastening solution that withstands rigorous use without compromising on ease of handling.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of restricted substances and suitable for international industrial markets. Manufactured to precise specifications including an 8-32 thread size, 1/2" length, and coarse thread spacing, it delivers reliable performance in accordance with common engineering requirements for strength and environmental safety.