S-96452A542 1/4"-20 x 1" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior tamper resistance and torque transfer with Torx Plus IP27/T27 drive, reducing tool slippage and damage in high-torque applications
• Exceptional corrosion protection from the black-oxide finish on alloy steel, ideal for industrial environments requiring durability
• Precise thread engagement and reliable fastening with Class 3A thread fit, minimizing the risk of cross-threading and assembly failures
• High load-bearing capacity thanks to 120,000 psi tensile strength and Rockwell C39 hardness, ensuring long-term joint integrity
• Low-profile, rounded button head design provides a smooth finish and reduces snagging in confined spaces
• Full threading along the 1" length enables consistent clamping force and versatile positioning in assemblies
• Compliance with major industry standards including ASME B18.3, ensuring interchangeability and reliability in regulated applications

Professional Applications & Engineering Value

This 1/4-20 UNC Torx Plus button head screw in black-oxide alloy steel is engineered to address critical challenges in industrial assembly, such as vibration resistance and corrosion in harsh environments. The Class 3A thread fit and coarse threading ensure quick, secure installations with reduced risk of stripping, while the fully threaded design distributes stress evenly across the fastener. Its rounded head profile minimizes protrusion, making it ideal for machinery, automotive components, and electronic enclosures where space and safety are concerns. With a Torx Plus drive, operators achieve higher torque application without cam-out, enhancing efficiency in automated or manual settings. These screws deliver reliable performance in high-strength applications, supported by compliance with ASME B18.3 and material standards.

Specification Summary & Compliance

This product features a 1/4"-20 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy, fully threaded along a 1" length. It meets ASME B18.3 specifications (referencing ASTM F835) and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability. The black-oxide surface treatment on alloy steel provides additional corrosion resistance, supporting use in regulated industrial sectors.