S-90165A420 5/16"-18 x 1 5/16" 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
- Tool-free installation and adjustment with a large four-arm thumb head for secure hand-tightening in tight spaces
- Superior corrosion resistance thanks to the black-oxide steel finish, extending service life in demanding environments
- Exceptional mechanical strength with 180,000 psi tensile strength and Rockwell C40 hardness for reliable, heavy-duty applications
- Reduced risk of surface damage with a removable swivel tip that pivots up to 10°, preventing marring on contact surfaces
- Wide compatibility and secure fastening ensured by the UNC coarse thread and Class 2A thread fit for easy engagement and vibration resistance
- Full-length threading for maximum adjustability and holding power along the entire 1 5/16" length
- Safe for regulated industries with compliance to RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This black-oxide steel thumb screw is engineered to solve common industrial challenges where frequent adjustments and high reliability are paramount. The four-arm head design provides excellent grip for hand-operated tightening, eliminating the need for tools in applications like access panels, machine guards, and electronic enclosures. The removable swivel tip is critical for applications requiring a non-marring contact point, such as securing delicate components or finished surfaces, while the UNC coarse thread ensures quick assembly and disassembly. Made from high-strength steel with a Rockwell C40 hardness, it withstands repeated use and high-stress conditions in manufacturing, automation, and maintenance operations, ensuring long-term performance and reducing downtime.
Specification Summary & Compliance
This thumb screw features a 5/16"-18 UNC thread with a Class 2A thread fit for standard dimensional accuracy and easy assembly. It is fully threaded with coarse spacing and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.
