S-91185A843 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
- Effortless hand-tightening with multi-lobe head design for superior grip without tools
- Corrosion-resistant performance using durable 18-8 stainless steel construction
- Comfortable handling with lightweight black acetal plastic head that withstands temperatures from 32° to 180°F
- Precise thread engagement with Class 3A fit and UNC coarse threads for reliable fastening
- Maximum adjustability through fully threaded 1" length design
- Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use
- Right-hand threading for standard installation and quick adjustments
Professional Applications & Engineering Value
This heavy-duty thumb screw combines 18-8 stainless steel with a black acetal plastic multi-lobe head to solve critical industrial challenges. The Class 3A thread fit ensures precise engagement in UNC coarse threading applications, preventing cross-threading while maintaining vibration resistance. The fully threaded design allows for complete adjustability across the entire 1" length, making it ideal for equipment requiring frequent access or calibration. The acetal plastic head provides electrical insulation and comfortable handling in temperature-controlled environments, while the stainless steel body resists corrosion in demanding industrial settings. These features make it particularly valuable for electronic enclosures, machinery guards, and assembly fixtures where tool-less adjustments are essential for maintenance efficiency.
Specification Summary & Compliance
This thumb screw features 5/16"-18 UNC coarse threads with Class 3A thread fit for precision engagement. The right-hand thread direction and fully threaded 1" length provide standard installation compatibility. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications. The combination of 18-8 stainless steel construction and acetal plastic multi-lobe head delivers reliable performance within specified temperature ranges.
