S-90289A142 6-32 x 1/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in harsh industrial environments.
• Exceptional holding power ensured by Class 3A thread fit and serrations, preventing loosening under vibration and dynamic loads.
• High durability and wear resistance from Rockwell C45 hardness, maintaining performance in repetitive assembly applications.
• Easy installation and removal with 1/16" hex drive design, reducing tool slippage and assembly time.
• Secure component positioning via cup tip design, distributing pressure evenly and minimizing surface damage.
• Reliable coarse UNC threading for quick engagement and strong fastening in various materials.
• Compact headless construction allowing flush mounting in space-constrained assemblies.

Professional Applications & Engineering Value

This 6-32 UNC set screw is engineered to address critical challenges in precision machinery, automotive systems, and electronic enclosures where vibration resistance and positional accuracy are paramount. The black-oxide alloy steel construction combats rust and wear, while the Class 3A thread fit and serrations provide unmatched locking force to prevent back-out under operational stress. The cup tip design minimizes marring on shafts and gears, preserving component integrity. Ideal for securing collars, pulleys, and knobs, this screw delivers reliable performance in high-torque applications, reducing maintenance needs and downtime.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with precise UNC coarse threads and Class 3A thread fit ensuring dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, supporting sustainable manufacturing practices.