S-91185A925 1/4"-20 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
- Tool-free operation with comfortable two-arm thumb head design for quick manual adjustments without tools
- Superior corrosion resistance from 18-8 stainless steel construction ensuring long-term reliability in demanding environments
- Enhanced grip and durability with black Acetal plastic head that withstands temperatures from 32° to 180°F
- Precision thread engagement with Class 3A thread fit providing secure fastening and vibration resistance
- Quick installation through fully threaded 1/4"-20 UNC coarse thread design for maximum holding power
- Right-hand threading compatibility with standard UNC systems for easy integration into existing assemblies
- Regulatory compliance meeting RoHS 3 and REACH standards for safe use across industrial applications
Professional Applications & Engineering Value
Engineered for industrial applications requiring frequent adjustments, this 1/4"-20 thumb screw combines the strength of 18-8 stainless steel with the ergonomic benefits of a black Acetal plastic head. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of cross-threading while maintaining consistent clamping force. The fully threaded design provides maximum contact surface area, making it ideal for applications where vibration resistance and quick assembly/disassembly are critical. The two-arm thumb head offers superior torque application without specialized tools, significantly reducing maintenance time in equipment panels, machinery guards, and adjustable fixtures where manual operation efficiency directly impacts productivity.
Specification Summary & Compliance
This thumb screw features precision 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. Manufactured from 18-8 stainless steel with a black Acetal plastic head, the component maintains fully threaded construction along its 1" length. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use across various sectors.
