S-91771A945 8-32 x 3/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance under high-stress applications.
• Precise and secure fastening thanks to the Class 2A thread fit and UNC coarse threading, providing excellent engagement and vibration resistance.
• Efficient installation and flush finish with the Phillips No. 2 drive and 100° countersink angle, allowing for quick assembly and a smooth surface profile.
• Full thread coverage across the 3/16" length ensures maximum grip and load distribution in various material thicknesses.
• Compliance with major industry standards including ASME B18.6.3, ensuring dimensional accuracy and interchangeability for professional use.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe usage.

Professional Applications & Engineering Value

This 8-32 UNC flat head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation efficiency. The passivated 18-8 stainless steel provides excellent resistance to rust and chemical exposure, making it ideal for applications in marine, automotive, and food processing equipment where durability is critical. The Phillips No. 2 drive and 100° countersink angle enable quick, secure fastening with a flush finish, reducing assembly time and minimizing protrusion in tight spaces. With its coarse thread and fully threaded design, it ensures reliable holding power in materials like metal, plastic, and wood, preventing joint failure in dynamic environments. These features make it a trusted choice for engineers seeking a high-strength, compliant fastener for demanding industrial applications.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 2A thread fit and UNC coarse thread specification, ensuring consistent performance and easy replacement. It meets the ASME B18.6.3 standard for mechanical and dimensional requirements, guaranteeing reliability in professional use. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.