S-91882A477 1/2"-13 x 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 grip and torque application with a knurled round head design for secure manual tightening without tools
- Superior corrosion resistance and durability due to black-oxide steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and repeated use
- Easy and quick installation with coarse UNC threads and Class 2A fit, reducing assembly time
- Full threading along the 2" length provides consistent engagement and holding power in various materials
- Compliance with RoHS 3 and REACH regulations guarantees environmental safety and broad industry acceptance
- Raised head profile with collar offers stable seating and prevents over-tightening in panel or fixture applications
Professional Applications & Engineering Value
This heavy-duty thumb screw is engineered from black-oxide steel to address common industrial challenges such as frequent adjustments and exposure to corrosive conditions. The knurled round head ensures maximum grip, enabling rapid manual operation in machinery, electronic enclosures, and assembly jigs without specialized tools. With a coarse UNC thread and Class 2A fit, it simplifies alignment and reduces cross-threading risks, while the fully threaded design maintains secure fastening in wood, metal, or plastic components. Its high tensile strength and hardness (Rockwell B84) make it suitable for demanding applications where vibration resistance and long-term reliability are critical, minimizing maintenance downtime and replacement costs.
Specification Summary & Compliance
This thumb screw features precise Class 2A thread fit with 1/2"-13 UNC coarse threads, ensuring dimensional accuracy and interchangeability. It adheres to industry standards for inch-system fasteners and is manufactured to meet RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I for lead in steel, as well as REACH (EC 1907/2006) regulations, confirming its suitability for global industrial and electronic uses without hazardous substances.
