S-90282A205 1/4"-20 x 2" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Effortless hand-tightening with a knurled head for superior grip in tight spaces without tools
- Enhanced durability and corrosion resistance from black-oxide steel, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
- Permanent swivel tip with 7.5° maximum angle prevents damage to surfaces and allows for secure, flush fastening
- Full threading and Class 2A thread fit provides consistent engagement and easy installation in coarse UNC threads
- Low-profile round head design minimizes protrusion for applications with limited clearance
- Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global markets
Professional Applications & Engineering Value
This black-oxide steel thumb screw is engineered to address common industrial challenges, such as frequent adjustments and assembly in confined areas. The knurled head offers a non-slip grip, reducing installation time and eliminating the need for specialized tools. Its permanent swivel tip distributes pressure evenly, preventing marring on delicate components like electronic enclosures, machinery panels, and fixtures. With a Rockwell B85 hardness and 80,000 psi tensile strength, it withstands repetitive use and mechanical stress in industrial thumb screw applications. The fully threaded 1/4"-20 UNC coarse thread ensures quick, secure fastening, while the low-profile design is ideal for compact assemblies where space is at a premium.
Specification Summary & Compliance
This thumb screw adheres to Class 2A thread fit for standard UNC 1/4"-20 coarse threading, ensuring dimensional accuracy and interchangeability. It is manufactured from black-oxide steel with a right-hand thread direction and is fully threaded for maximum holding power. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element in steel and REACH (EC 1907/2006), meeting environmental and safety standards for industrial use.
