S-91375A901 1"-8 x 7/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coating, extending service life in harsh industrial environments.
• Exceptional holding strength due to Rockwell C45 hardness, preventing deformation under high stress.
• Precise, secure fastening with Class 3A thread fit, minimizing backlash and ensuring reliable connections.
• Easy installation and high torque application via the 9/16" hex drive, reducing assembly time.
• Effective grip on shafts and components with the cup tip design, resisting loosening from vibrations.
• Durability in heavy-duty applications from alloy steel construction, supporting long-term performance.
• Broad compatibility with UNC coarse threads, facilitating use in various machinery and equipment.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel set screw is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and corrosion in demanding settings. Its 1"-8 UNC coarse thread and Class 3A fit provide tight tolerances for secure positioning in pulleys, gears, and collars, reducing maintenance needs. The hex drive allows for efficient installation with standard tools, while the cup tip ensures a firm bite into materials, preventing slippage. Ideal for automotive, manufacturing, and heavy machinery, this screw enhances assembly integrity and operational reliability, backed by its high hardness and compliant standards.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance. It features a Class 3A thread fit for precise engagement, with UNC coarse threads and a right-hand thread direction. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental and safety standards, making it suitable for global industrial applications without hazardous substances.