S-91375A684 7/16"-20 x 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide finish, extending service life in demanding environments.
• Exceptional holding power due to the alloy steel construction and Rockwell C45 hardness, preventing stripping and deformation under high stress.
• Precise and secure fastening enabled by the Class 3A thread fit, ensuring minimal backlash and reliable performance in critical assemblies.
• Easy installation and high torque transmission with the hex drive and 7/32" drive size, allowing for efficient assembly with standard tools.
• Effective component locking provided by the cup point tip design, which bites into the shaft for a firm, non-slip grip.
• Reliable performance in fine-thread applications thanks to the 7/16"-20 UNF thread, ideal for adjustments requiring fine pitch.
• Confidence in regulatory compliance by meeting ASME B18.3, ASTM F912, RoHS 3, and REACH standards, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to solve critical challenges in industrial applications where vibration resistance, precise alignment, and long-term reliability are paramount. The UNF fine thread and Class 3A thread fit provide superior clamping force and accuracy, preventing loosening in machinery, automotive components, and precision instruments. The headless design with a hex drive allows for flush mounting in confined spaces, while the cup point tip ensures a permanent, secure lock on shafts and collars. Manufactured from high-strength alloy steel with a Rockwell C45 hardness, it withstands heavy loads and repetitive stress, making it an ideal choice for demanding engineering assemblies that require durability and consistent performance.

Specification Summary & Compliance

This set screw features a 7/16"-20 UNF thread with a Class 3A thread fit for high precision. It is manufactured in compliance with ASME B18.3 and ASTM F912 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.