S-96452A581 5/16"-18 x 3/4" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior torque transmission with Torx Plus IP40 drive for reduced cam-out and enhanced installation efficiency in high-torque applications
• Exceptional corrosion resistance provided by the Black-Oxide finish on Alloy Steel, extending service life in demanding industrial environments
• High-reliability fastening with 120,000 psi tensile strength and Rockwell C39 hardness, ensuring joint integrity under heavy loads
• Precise thread engagement through Class 3A UNC coarse threads, offering superior vibration resistance and faster assembly
• Optimized head design with low-profile rounded button head for applications requiring flush or minimal protrusion mounting
• Full-threaded construction for maximum grip length and uniform stress distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

These Black-Oxide Alloy Steel rounded head screws deliver critical performance advantages for industrial assembly challenges. The Torx Plus IP40 drive system eliminates tool slippage during high-torque applications, preventing fastener damage and reducing assembly time in automated production environments. Engineered with Class 3A UNC coarse threads, these screws provide superior resistance to vibrational loosening in machinery, heavy equipment, and structural applications. The combination of 120,000 psi tensile strength and Rockwell C39 hardness ensures reliable performance in high-stress applications while the fully threaded design maximizes clamping force distribution. The low-profile rounded head offers both aesthetic appeal and functional clearance in confined spaces, making these fasteners ideal for precision manufacturing, automotive subsystems, and industrial machinery where reliability and compliance with international standards are paramount.

Specification Summary & Compliance

These screws feature precision 5/16"-18 UNC threads with Class 3A fit for superior dimensional accuracy and consistent performance. Manufacturing complies with ASME B18.3 specifications (ASTM F835) ensuring dimensional consistency and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for global market acceptance. The right-hand coarse thread spacing and fully threaded construction provide reliable fastening performance across various industrial applications.