S-92778A113 8-32 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Exceptional holding power and precision fit due to Class 3A thread fit, minimizing backlash and ensuring secure component positioning.
• High-strength performance with Rockwell B80 hardness, providing excellent resistance to wear and deformation under load.
• Secure and efficient installation using a standard 5/64" hex key, allowing for high torque application in confined spaces due to the headless design.
• Reduced risk of component damage with the oval tip, which provides a concentrated contact point without gouging the mating surface.
• Reliable and standardized performance as it meets ASME B18.3 specifications, ensuring interchangeability and predictable mechanical behavior.
• Safe for regulated industries with compliance to RoHS 3 and REACH, making it suitable for electronics and other sensitive applications.

Professional Applications & Engineering Value

This 8-32 UNC Class 3A set screw is engineered to solve critical challenges in precision assembly and motion control systems. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, making it perfect for use in manufacturing equipment, automotive components, and electronic enclosures where environmental durability is paramount. The coarse UNC thread and Class 3A fit ensure a tight, secure connection that resists loosening under vibration, a common failure point in dynamic industrial applications. The headless design with a 5/64" hex drive allows for flush mounting in tight spaces, while the oval tip concentrates clamping force effectively without marring shafts or collars. This combination of features provides reliable, long-lasting fastening for pulleys, gears, and knobs, enhancing overall machine integrity and reducing maintenance downtime.

Specification Summary & Compliance

This set screw features a 8-32 UNC coarse thread with a Class 3A fit for high precision and strength. It is manufactured in compliance with the ASME B18.3 standard, ensuring dimensional accuracy and performance reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.