S-92703A121 8-32 x 5/8" ASME B18.3 Stainless Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments and long-term reliability.
• Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP20/T20 drive, ensuring secure fastening and minimal tool wear.
• High tensile strength of 60,000 psi and Rockwell B70 hardness for dependable performance under heavy loads and stress.
• Flush, low-profile installation with an 82° countersink angle and standard flat head design, preventing snagging and improving aesthetics.
• Precise, reliable threading with UNC coarse threads and Class 3A fit, offering excellent engagement and vibration resistance in assemblies.
• Full threading along the 5/8" length provides maximum grip and adjustability in a variety of material thicknesses.
• Compliance with major industrial standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.

Professional Applications & Engineering Value

This 8-32 UNC flat head screw is engineered to address common industrial challenges such as fastener failure due to corrosion, stripping during high-torque installation, and loosening under vibration. Constructed from 18-8 stainless steel with a passivated finish, it resists oxidation and chemical exposure, making it suitable for applications in marine, chemical processing, and outdoor equipment. The Torx Plus drive (IP20/T20) ensures efficient torque transfer, reducing the risk of damage to the screw head and driver, which is critical in automated or repetitive assembly lines. Its fully threaded design and Class 3A thread fit provide secure fastening in metals and plastics, minimizing maintenance needs and enhancing product lifespan in machinery, enclosures, and structural components.

Specification Summary & Compliance

This screw features precise UNC coarse threads with a Class 3A thread fit for tight tolerances and reliable performance. It adheres to ASME B18.3 manufacturing specifications, ensuring dimensional accuracy and interchangeability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial and electronic applications.