S-96966A622 1/4"-20 x 1/2" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced torque application with spade head design for secure grip and hand-tightening without tools
- Superior corrosion resistance from zinc-plated steel construction, extending service life in demanding environments
- High mechanical strength with 40,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Quick installation and removal enabled by fully threaded UNC coarse pattern and right-hand thread direction
- Precise thread engagement with Class 2A fit ensuring consistent mating and reduced cross-threading risks
- Broad industrial compatibility through standardized 1/4"-20 thread size matching common equipment and components
- Environmental compliance meeting RoHS 3 standards for restricted substance control in regulated applications
Professional Applications & Engineering Value
This zinc-plated steel thumb screw delivers exceptional value in applications requiring frequent access or adjustment, such as panel fastening, machinery guards, and electronic enclosures. The spade head design provides substantial surface area for hand tightening, eliminating tool dependency while the UNC coarse thread resists clogging in high-vibration or debris-prone environments. With fully threaded construction and Class 2A fit, it maintains consistent clamping force across the entire 1/2" length, preventing loosening under dynamic loads. The zinc plating creates a protective barrier against oxidation and chemical exposure, making it suitable for industrial maintenance, automotive assemblies, and outdoor equipment where durability and quick service access are critical.
Specification Summary & Compliance
Manufactured to precise dimensional standards with UNC coarse thread (1/4"-20) and Class 2A thread fit for consistent interchangeability. The screw meets RoHS 3 (2015/863/EU) compliance requirements, ensuring environmental responsibility while maintaining mechanical properties including Rockwell B55 hardness and 40,000 psi tensile strength for reliable performance in industrial fastening applications.
