S-92480A865 4-40 x 3/16" ASME B18.6.3 Brass Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh industrial environments
• Precise flush mounting with undercut flat head design and 82° countersink angle for seamless surface integration
• Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable load-bearing capability
• Optimized driving efficiency with No. 1 Phillips drive that prevents cam-out and ensures secure installation
• Reliable thread engagement with fully threaded coarse UNC pattern and Class 2A fit for vibration resistance
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for global applications
• Versatile right-hand threading compatible with standard industrial equipment and assembly processes

Professional Applications & Engineering Value

These 4-40 UNC brass flat head screws deliver exceptional engineering value through their specialized material and design characteristics. The brass construction provides inherent corrosion resistance, making them ideal for electrical components, marine equipment, and plumbing systems where moisture exposure is a concern. The undercut flat head profile with 82° countersink angle ensures perfect flush mounting in precision applications, eliminating protrusions that could interfere with moving parts or aesthetic requirements. The fully threaded coarse UNC pattern combined with Class 2A thread fit offers superior holding power in softer materials and resistance to vibration loosening. With No. 1 Phillips drive compatibility, these screws enable efficient installation in confined spaces while maintaining torque transfer integrity. These features collectively address critical industrial challenges including corrosion prevention, space optimization, and long-term mechanical reliability.

Specification Summary & Compliance

These flat head screws maintain precise dimensional accuracy with Class 2A thread fit per UNC standards, ensuring consistent performance across industrial applications. Manufacturing conforms to ASME B18.6.3 specifications for dimensional integrity and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, confirming adherence to international substance restrictions. The inch system measurements guarantee compatibility with North American equipment and specifications, while the standardized right-hand threading and coarse thread spacing provide universal industrial applicability.