S-91375A882 7/8"-9 x 3" ASME B18.3, ASTM F912 Set Screws
Set 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
- Enhanced corrosion resistance from the black-oxide finish, extending service life in demanding environments.
- Superior torque transmission and installation ease with the 1/2" hex drive, preventing tool slippage.
- Exceptional holding strength and durability due to the alloy steel construction and Rockwell C45 hardness.
- Reliable, precise thread engagement with Class 3A fit UNC coarse threads for secure fastening in high-vibration applications.
- Secure component positioning provided by the cup tip, which minimizes surface damage and increases grip.
- Broad industrial compatibility ensured by compliance with ASME B18.3 and ASTM F912 standards.
- Safe for regulated industries as it meets RoHS 3 and REACH environmental compliance standards.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in heavy machinery, automotive, and construction assemblies where vibration loosening and corrosion are common failures. The headless design and cup tip allow for flush mounting and secure positioning of gears, pulleys, and collars on shafts without protruding parts. Its 7/8"-9 UNC coarse thread and Class 3A thread fit provide rapid installation and high resistance to backlash, while the Rockwell C45 hardness ensures the fastener maintains integrity under high static and dynamic loads. Ideal for permanent or semi-permanent applications, this hex drive set screw delivers reliable performance in environments requiring robust, corrosion-resistant industrial fasteners.
Specification Summary & Compliance
This set screw features a 7/8"-9 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy and secure fastening. It is manufactured in accordance with ASME B18.3 and ASTM F912 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial markets.
