S-91375A861 3/4"-16 x 2" 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
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Exceptional holding power from Class 3A thread fit, ensuring precise, vibration-resistant fastening in critical assemblies.
- High tensile strength and durability due to alloy steel construction and Rockwell C45 hardness, suitable for heavy-duty applications.
- Easy installation and removal with a 3/8" hex drive, allowing for high torque application without slippage.
- Secure, non-slip grip provided by the cup tip design, preventing component movement under dynamic loads.
- Reliable fine thread engagement with 3/4"-16 UNF threads, offering improved adjustment accuracy and load distribution.
- Compact, space-saving design as a headless set screw, ideal for applications with limited clearance.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common industrial challenges such as component slippage, corrosion, and vibration-induced loosening. The Class 3A thread fit and fine UNF threads provide tight tolerances and superior clamping force, making it ideal for precision machinery, automotive systems, and heavy equipment where reliable positioning is critical. The cup tip ensures maximum contact and minimal surface damage, while the hex drive facilitates quick assembly and disassembly. Its high hardness (Rockwell C45) and corrosion-resistant coating deliver long-term performance in demanding environments, reducing maintenance needs and downtime.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 and ASTM F912 specifications, ensuring dimensional accuracy and manufacturing consistency. The 3/4"-16 UNF fine threads maintain a Class 3A thread fit for precise engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions are met for industrial use.
