S-91773A636 3/8"-16 x 3" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 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 applications
• Optimized drive engagement through No. 4 Phillips drive and rounded head design for secure installation and reduced cam-out
• Reliable coarse threading with UNC 3/8"-16 threads and Class 2A fit for quick assembly and vibration resistance
• Versatile partial threading allowing unthreaded shank sections for precise clamping and alignment in structural applications
• Industry-standard compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance consistency
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

These 3/8"-16 UNC rounded head Phillips screws deliver critical engineering value in demanding industrial environments where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel composition with passivated finish provides exceptional protection against oxidation and chemical exposure, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The partially threaded design ensures optimal load distribution while the coarse UNC threading maintains secure fastening even under vibration stress. With their rounded head profile and No. 4 Phillips drive, these screws offer both aesthetic appeal and practical installation efficiency for assembly lines requiring consistent, reliable fastening solutions in manufacturing, construction, and heavy equipment maintenance.

Specification Summary & Compliance

This rounded head screw features precise 3/8"-16 UNC coarse threads with Class 2A thread fit tolerance for reliable engagement. The 3" length with minimum 1½" thread length provides versatile fastening capabilities. Manufacturing complies with ASME B18.6.3 standards for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental safety standards for industrial components.