S-90273A441 3/8"-16 x 2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional load-bearing capacity with 60,000 psi tensile strength for reliable performance in heavy-duty applications
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized flush mounting with standard 82° countersink angle for seamless surface integration
• Enhanced installation efficiency with No. 4 Phillips drive providing positive torque transfer
• Full-length threading offering maximum grip length and adjustment flexibility
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This zinc-plated steel flat head screw delivers critical engineering solutions for industrial assembly challenges. The combination of Rockwell B70 hardness and 60,000 psi tensile strength provides exceptional durability against mechanical stress and fatigue in heavy machinery, structural frameworks, and equipment manufacturing. The UNC coarse thread design ensures rapid installation and superior holding power in various materials, while the standard 82° countersink enables flush surface mounting critical for safety and aesthetics. The fully threaded configuration offers maximum engagement depth, making it ideal for applications requiring adjustable clamping force. These flat head Phillips screws are engineered to maintain integrity in vibration-prone environments, reducing maintenance frequency and downtime in industrial operations.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards, ensuring precise dimensional accuracy for consistent performance. Manufacturing specifications strictly adhere to ASME B18.6.3 requirements for flat head screw geometry and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. The zinc-plated surface treatment provides additional corrosion protection while maintaining the specified mechanical properties of the steel substrate.