S-90910A563 2-56 x 3/4" ASME B18.3 Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Enhanced torque transmission and reduced cam-out thanks to the T6 Torx drive, ensuring secure installation and removal.
• High tensile strength of 60,000 psi provides reliable holding power for demanding applications.
• Precise Class 3A thread fit ensures consistent engagement and vibration resistance in assemblies.
• Partially threaded 2-56 UNC coarse spacing design allows for effective clamping without unnecessary thread length.
• Rounded (button) head profile offers a low-profile, finished appearance and reduces snagging risks.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to strict quality and environmental standards.

Professional Applications & Engineering Value

This 2-56 UNC T6 Torx Rounded Head Screw in 18-8 Stainless Steel is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation efficiency. The passivated finish significantly enhances its resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine components, and chemical processing machinery. The T6 Torx drive minimizes tool slippage, allowing for higher torque application and reducing assembly time and damage risks. With a Rockwell B55 hardness and 60,000 psi tensile strength, it provides durable fastening in high-stress applications like electronics enclosures, automotive assemblies, and precision instruments. The partially threaded and coarse spacing design ensures optimal grip and ease of use in materials where full threading is unnecessary, enhancing overall mechanical integrity and reliability.

Specification Summary & Compliance

This screw features a 2-56 UNC thread size with Class 3A thread fit for precise dimensional accuracy and consistent performance. It meets ASME B18.3 manufacturing specifications, ensuring uniformity and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industries without hazardous substances. Additional details include a length of 3/4 inch, right-hand thread direction, and partial threading up to a minimum of 43/64 inch, providing a robust and standards-aligned fastening solution.