S-91510A173 5/16"-18 x 1" 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
- Easy hand-tightening without tools thanks to the wing-shaped thumb head design for quick assembly and disassembly
- Superior corrosion resistance with zinc-plated steel construction, extending service life in various environments
- Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring secure fastening in industrial applications
- Full-length threading provides maximum grip along the entire 1" length for versatile positioning and holding power
- Wide head diameter (0.68") offers comfortable, slip-resistant handling and distributes pressure evenly
- Compliance with strict environmental standards including RoHS 3 and REACH, making it suitable for regulated industries
- Right-hand thread direction allows for standard clockwise tightening, compatible with common assembly practices
Professional Applications & Engineering Value
This zinc-plated steel thumb screw is engineered to address common industrial challenges such as frequent adjustments and tool-free access requirements. The wing head design enables rapid hand-tightening, reducing assembly time and eliminating the need for specialized tools in maintenance panels, machinery guards, or electronic enclosures. Its UNC coarse thread and Class 2A fit provide excellent resistance to vibration loosening, while the fully threaded shank ensures consistent clamping force across various material thicknesses. Ideal for applications in manufacturing, automotive, and electronics, this screw combines durability with user convenience, supporting efficient operations where quick access and reliable fastening are critical.
Specification Summary & Compliance
This thumb screw features a 5/16"-18 UNC coarse thread with Class 2A tolerance for precise fit and interchangeability. The zinc-plated steel material offers enhanced corrosion protection, and the product is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial use.
