S-90600A129 1/4"-20 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 environments.
• Enhanced torque transmission and reduced cam-out thanks to the T27 Torx drive, ensuring secure and efficient fastening.
• High tensile strength of 60,000 psi and Rockwell B55 hardness for reliable performance under heavy loads.
• Precise Class 3A thread fit with UNC coarse threading, providing excellent engagement and vibration resistance.
• Full threading along the 3/4" length for maximum grip and uniform stress distribution in assemblies.
• Rounded (button) head design offers a low-profile, aesthetically pleasing finish while minimizing snagging.
• Compliance with ASME B18.3, RoHS, and REACH ensures quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This 1/4"-20 x 3/4" T27 Torx rounded head screw in 18-8 stainless steel is engineered to address common industrial challenges such as corrosion, high torque demands, and assembly precision. The passivated finish enhances surface durability, making it suitable for applications in marine, chemical processing, and outdoor equipment where moisture and chemicals are present. Its Torx drive minimizes tool slippage, reducing downtime and damage in automated or manual fastening processes. With a Class 3A thread fit and fully threaded design, it ensures tight, reliable connections in machinery, electronics, and structural components, supporting long-term performance and reduced maintenance costs.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 3A precision fit for accurate alignment and strength. It adheres to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.