S-91185A933 1/4"-20 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
- Effortless manual operation with a wide two-arm acetal plastic head for secure grip and quick adjustments without tools
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or demanding industrial environments
- Reliable thread engagement with UNC coarse threading and Class 3A fit, ensuring precise, vibration-resistant fastening
- Lightweight and durable head made of black acetal plastic, reducing overall weight while maintaining strength and impact resistance
- Versatile temperature performance with a head operating range of 32° to 180° F, suitable for various indoor and controlled settings
- Enhanced safety and compliance meeting RoHS 3 and REACH regulations, ensuring safe use in electronics and consumer-facing applications
- Optimized partial threading on a 2" length for focused clamping force and easier alignment in assembly tasks
Professional Applications & Engineering Value
This 1/4"-20 thumb screw combines 18-8 stainless steel with a black acetal plastic head to address common industrial challenges like frequent adjustments and corrosion in machinery, enclosures, and electronic housings. The two-arm design and coarse UNC threads enable rapid hand-tightening, reducing assembly time and tool dependency. Its partially threaded shank concentrates clamping force where needed, preventing over-tightening and thread damage. Ideal for maintenance panels, prototyping, and equipment requiring right-hand thread reliability, this screw offers a durable, compliant solution that withstands repeated use without compromising performance.
Specification Summary & Compliance
This thumb screw adheres to UNC coarse thread standards with a Class 3A thread fit for high precision and minimal backlash. Dimensions include a 1/4"-20 thread size, 2" length, and partially threaded design. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety compliance for global industrial applications.
