S-91510A141 1/4"-20 x 3/8" 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
- Tool-free installation and removal with wing-shaped head design for easy hand-tightening in tight spaces
- Enhanced corrosion resistance through zinc-plated steel construction for extended service life in various environments
- Superior grip and holding power with fully threaded UNC coarse thread design preventing loosening under vibration
- Precise thread engagement with Class 2A thread fit ensuring reliable fastening and consistent performance
- Quick assembly applications enabled by right-hand thread direction for standard clockwise tightening
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
- Optimized head dimensions (1 5/64" width) providing comfortable manual operation without specialized tools
Professional Applications & Engineering Value
This zinc-plated steel thumb screw solves critical assembly challenges where tool access is limited or frequent adjustments are necessary. The wing-shaped head enables rapid installation and removal in electronic enclosures, machinery guards, and prototype fixtures without compromising security. The fully threaded UNC coarse threading maintains consistent clamping force across the entire 3/8" length, while the Class 2A thread fit guarantees precise mating with standard 1/4"-20 components. The corrosion-resistant zinc plating protects against environmental degradation, making these thumb screws ideal for maintenance panels, adjustable brackets, and temporary fixtures across manufacturing, electronics, and industrial equipment sectors.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. The 1/4"-20 thread size features right-hand direction and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. The zinc-plated steel construction meets industrial fastening requirements for corrosion resistance and mechanical performance.
