S-91771A197 8-32 x 3/4" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• High tensile strength of 80,000 psi ensures reliable load-bearing capacity and prevents fastener failure under stress.
• Class 2A thread fit with UNC coarse threading provides easy installation and secure, vibration-resistant connections in various materials.
• 82° countersink angle and flat head design allows for flush mounting, reducing snagging risks and improving aesthetic finishes.
• Full threading and Phillips No. 2 drive enable quick, efficient assembly and disassembly with standard tools, saving labor time.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality, safety, and environmental standards for global supply chains.
• Rockwell B80 hardness offers excellent durability and wear resistance, extending service life in high-use applications.

Professional Applications & Engineering Value

These 8-32 UNC flat head screws are engineered to address common industrial challenges such as corrosion-induced degradation and assembly inefficiencies. The passivated 18-8 stainless steel material provides a robust barrier against moisture, chemicals, and oxidation, making them suitable for marine, automotive, and electronics enclosures where environmental exposure is a concern. The fully threaded design and coarse thread spacing ensure maximum grip and holding power in softer substrates or pre-tapped holes, reducing the risk of stripping. With a Phillips drive and standardized 82° countersink, these screws facilitate rapid, flush installations that minimize protrusions—critical for applications in machinery, HVAC systems, and consumer appliances where space constraints and safety are priorities. By integrating high tensile strength and compliance with ASME B18.6.3, these fasteners deliver consistent performance, lower maintenance costs, and enhanced reliability in demanding B2B settings.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threads per inch for optimal torque transmission. Manufacturing follows ASME B18.6.3 specifications, ensuring uniformity in head diameter (0.312"), length (3/4"), and thread size (8-32). Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms the absence of hazardous substances, supporting sustainable and safe usage in regulated industries.