S-90165A537 5/8"-11 x 4 9/16" 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
- Effortless hand-tightening with a large four-arm thumb head (3" width) for secure grip without tools in tight spaces.
- Exceptional durability and corrosion resistance thanks to black-oxide steel construction and a hardness of Rockwell C40.
- Superior load-bearing capability with a high 180,000 psi tensile strength, ideal for heavy-duty industrial applications.
- Secure and adaptable fastening via a removable swivel tip that accommodates up to 10° angular misalignment, preventing damage to surfaces.
- Reliable and quick installation with a fully threaded coarse (UNC) design and Class 2A thread fit for consistent engagement.
- Enhanced stability during use provided by the integrated collar, ensuring the screw remains properly aligned.
- Safe for regulated environments as it is compliant with RoHS 3 and REACH standards, ensuring no hazardous substances.
Professional Applications & Engineering Value
This heavy-duty thumb screw is engineered to solve critical fastening challenges in industrial settings where tool access is limited and manual adjustment is preferred. The black-oxide steel material offers excellent resistance to rust and wear, extending service life in harsh conditions. Its fully threaded UNC coarse thread and Class 2A fit ensure rapid, secure installation with high repeatability, reducing assembly time. The removable swivel tip is particularly valuable for applications involving uneven or delicate surfaces, as it distributes pressure evenly and minimizes the risk of marring. Ideal for use in machinery panels, electrical enclosures, and fixtures, this screw provides a reliable, high-strength clamping solution that maintains integrity under significant vibrational and tensile loads.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from black-oxide steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances. The product meets the specified mechanical properties, including a tensile strength of 180,000 psi and Rockwell C40 hardness.
