S-94070A108 4-40 x 3/8" ASME B18.6.3 Brass Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh industrial environments
• Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B40 hardness for reliable heavy-duty applications
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized drive efficiency with Phillips No. 1 drive providing excellent torque transfer and reduced cam-out risk
• Full threading capability along the entire 3/8" length for maximum grip and holding power in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH
• Versatile pan head design with rounded profile offering low-profile installation and improved aesthetic integration

Professional Applications & Engineering Value

These 4-40 UNC brass pan head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of brass material properties with Class 2A thread fit ensures consistent performance in electronic enclosures, automotive components, and precision instrumentation where galvanic corrosion and thread stripping are common concerns. The fully threaded design provides maximum engagement in thin-section materials, while the Phillips drive system offers efficient installation in high-volume assembly operations. Engineered to maintain integrity in environments exposed to moisture, chemicals, and temperature variations, these screws solve critical fastening challenges while meeting stringent industry standards for quality and environmental compliance.

Specification Summary & Compliance

Manufactured to precise dimensional tolerances with Class 2A thread fit per UNC standards and 3/8" length accuracy. Complies with ASME B18.6.3 manufacturing specifications for mechanical and dimensional requirements. Meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Thread specifications include 4-40 UNC coarse thread with right-hand direction and full threading along the entire shank length.