S-91500A366 3/8"-16 x 2 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Enhanced durability and strength with 70,000 psi tensile strength and Rockwell B80 hardness for demanding industrial applications
• Reliable fastening performance through fully threaded 3/8"-16 UNC coarse threads and Class 2A fit for secure, vibration-resistant connections
• Efficient installation and flush finish with Phillips No. 4 drive and 82° countersink angle for easy driving and smooth surface alignment
• Long-term environmental safety with passivated finish and compliance to RoHS 3 and REACH regulations
• Broad compatibility and standardization meeting ASME B18.6.3 specifications for consistent quality and interchangeability
• Optimized for industrial use with right-hand threading and standard flat head profile for versatile, heavy-duty fastening solutions

Professional Applications & Engineering Value

These 316 stainless steel flat head screws are engineered to address critical challenges in industrial settings, such as exposure to corrosive elements and high-stress conditions. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, making these Phillips drive screws suitable for marine, chemical processing, and outdoor applications where moisture and chemicals are prevalent. With 3/8"-16 UNC coarse threads and a fully threaded design, they provide superior grip and load distribution in materials like metal and hard plastics, reducing the risk of stripping or loosening under vibration. The 82° countersink angle ensures a flush mount, essential for applications requiring aerodynamic or smooth surfaces, while the Class 2A thread fit guarantees precise, reliable engagement. Ideal for machinery assembly, structural frameworks, and equipment maintenance, these screws deliver long-term reliability and compliance with industry standards like ASME B18.6.3, ensuring they meet rigorous engineering demands.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threads with 3/8"-16 size. It is manufactured in compliance with ASME B18.6.3 specifications, ensuring reliability and interchangeability. Additionally, it meets environmental regulations such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming its safety for use in various industries without hazardous substances.