S-96452A540 1/4"-20 x 3/4" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide finish, extending service life in demanding industrial environments.
• High-strength performance with 120,000 psi tensile strength and Rockwell C39 hardness for reliable load-bearing applications.
• Enhanced torque transmission and reduced cam-out via the Torx Plus (IP27/T27) drive, ensuring secure fastening and tool longevity.
• Precise thread engagement with Class 3A fit and UNC coarse threading, providing consistent clamping force and vibration resistance.
• Low-profile, rounded button head design offers a sleek finish and reduces snagging risks in assembled products.
• Full threading along the 3/4" length allows for versatile installation depth and uniform stress distribution.
• Compliance with major industry standards including ASME B18.3, ensuring dimensional accuracy and interoperability.

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, these 1/4-20 UNC Torx Plus screws deliver exceptional reliability in machinery, automotive assemblies, and electronic enclosures. The Black-Oxide Alloy Steel construction provides a durable barrier against oxidation and wear, while the Class 3A thread fit minimizes the risk of loosening under dynamic loads. The Torx Plus drive system (IP27/T27) addresses common installation challenges by offering superior bit engagement, reducing slippage and damage to fastener heads. This combination of precision threading, high tensile strength, and corrosion resistance makes these rounded head screws ideal for applications requiring repeated disassembly and exposure to harsh conditions, ensuring long-term performance and reduced maintenance costs.

Specification Summary & Compliance

This product adheres to Class 3A thread tolerance per UNC standards, ensuring precise fit and consistent performance. Manufacturing and material specifications meet ASME B18.3 (ASTM F835), guaranteeing dimensional accuracy and mechanical properties. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmentally responsible sourcing and usage in global markets.