S-91375A845 3/4"-10 x 2 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding strength with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• High durability and wear resistance due to Rockwell C45 hardness, ensuring the screw maintains its integrity under heavy loads.
• Easy installation and high torque capability with the 3/8" hex drive, allowing for quick and secure tightening with standard tools.
• Effective grip and minimal component damage from the cup tip design, which concentrates force for a reliable hold on shafts and collars.
• Reliable performance in coarse-thread applications using 3/4"-10 UNC right-hand threads, ideal for quick assembly and disassembly.
• Compliance with major industrial standards including ASME B18.3 and ASTM F912, ensuring consistent quality and safety.

Professional Applications & Engineering Value

This 3/4"-10 UNC Class 3A set screw is engineered to address critical challenges in industrial machinery, automotive, and heavy equipment sectors. The black-oxide alloy steel construction combats rust and wear, while the Rockwell C45 hardness ensures it withstands high-stress conditions without deforming. Its hex headless design and coarse thread spacing facilitate efficient installation in confined spaces, providing a secure fit that resists loosening from vibrations. The cup tip offers concentrated clamping force, making it ideal for positioning components on shafts and pulleys, reducing slippage and maintenance downtime. By integrating these features, this set screw delivers reliable, long-term performance in precision set screw applications, enhancing overall assembly integrity.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for precise dimensional accuracy and superior thread engagement. It conforms to ASME B18.3 and ASTM F912 specifications, ensuring consistent manufacturing quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global industrial markets.