S-91773A641 3/8"-16 x 4" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for heavy-duty industrial applications
• Reliable fastening performance with Class 2A thread fit and UNC coarse threads providing secure engagement and vibration resistance
• Optimized drive efficiency through No. 4 Phillips drive design, enabling quick installation and reduced assembly time
• Versatile partial threading allowing for both secure clamping and adjustment flexibility in various assembly scenarios
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, ensuring safe use in regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 3/8"-16 UNC rounded head screws deliver critical performance advantages where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel construction, enhanced by passivated finish, provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The partially threaded design combined with coarse UNC threads ensures optimal clamping force distribution while accommodating thermal expansion and vibration stresses. With Phillips drive compatibility and standardized dimensions, these screws streamline assembly processes in manufacturing, construction, and maintenance operations where consistent fastening performance is essential for operational safety and equipment longevity.

Specification Summary & Compliance

This 4" length screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threading ensuring proper engagement and interchangeability. Manufacturing conforms to ASME B18.6.3 standards for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.