S-91500A367 3/8"-16 x 3" 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 like marine or chemical processing.
• Enhanced durability and load-bearing capacity thanks to 70,000 psi tensile strength and Rockwell B80 hardness.
• Reliable fastening and easy installation with a Phillips drive (No. 4 size) and fully threaded UNC coarse threads for quick assembly.
• Secure flush mounting achieved through an 82° countersink angle and standard flat head profile, minimizing protrusion.
• Long-term performance in demanding conditions ensured by the passivated finish, which increases surface hardness and corrosion protection.
• Precise thread fit and interchangeability with Class 2A thread fit, reducing the risk of cross-threading and ensuring consistent performance.
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, providing assurance for regulated applications.

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw in 316 stainless steel is engineered to address common industrial challenges such as corrosion, high stress, and assembly efficiency. The passivated finish enhances the inherent corrosion resistance of 316 stainless steel, making it suitable for applications in marine, chemical, and food processing industries where exposure to moisture and chemicals is frequent. The fully threaded coarse UNC threading and Phillips drive facilitate quick and secure fastening, reducing installation time in assembly lines or maintenance tasks. With a tensile strength of 70,000 psi and Rockwell B80 hardness, it provides reliable performance in structural and heavy-duty applications, ensuring long-term integrity without frequent replacements. Ideal for machinery, construction, and equipment manufacturing, this screw combines material excellence with practical design to solve durability and compliance needs.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threading with a right-hand direction, ensuring compatibility and ease of use. It meets ASME B18.6.3 specifications for dimensional accuracy and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally sensitive and regulated industrial applications.