S-90462A650 1/4"-20 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced Grip & Easy Hand-Tightening: Knurled round head design provides superior manual control without tools, ideal for frequent adjustments.
• High Strength-to-Weight Ratio: Glass-filled nylon construction delivers a robust 18,000 psi tensile strength while remaining lightweight and corrosion-resistant.
• Wide Temperature Resilience: Reliable performance from -40°F to 185°F, suitable for varied industrial environments.
• Quick Assembly & Secure Fit: UNC coarse 1/4"-20 threading with Class 2A fit ensures fast installation and consistent engagement.
• Durable & Non-Conductive: Plastic material offers excellent electrical insulation and resists chemicals, reducing maintenance needs.
• Full Thread Engagement: Fully threaded 1/2" length maximizes holding power across the entire fastener.
• Eco-Compliant & Safe: Meets RoHS 3 and REACH standards, ensuring regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This glass-filled nylon thumb screw addresses critical needs in industrial applications where tool-free, reliable fastening is essential. Its knurled head and round profile enable quick hand adjustments in tight spaces, reducing assembly time and minimizing tool dependency. The UNC coarse thread and Class 2A fit provide consistent clamping force, preventing loosening under vibration in equipment panels, electronic enclosures, or machinery guards. With a temperature range of -40°F to 185°F and high tensile strength, it withstands operational stresses in HVAC, automotive, and consumer electronics, while the plastic build eliminates galvanic corrosion risks. Fully threaded for uniform load distribution, it ensures secure fastening in plastic thumb screw applications demanding durability and compliance.

Specification Summary & Compliance

This thumb screw features precise 1/4"-20 UNC coarse threading with a Class 2A thread fit for standard tolerance and interchangeability. Dimensions include a 1/2" length, 35/64" head diameter, and knurled texture for ergonomic handling. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.