S-91771A950 8-32 x 1/2" 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, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precise flush mounting thanks to standard flat head profile and 100° countersink angle for seamless surface integration
• Optimized installation efficiency with Phillips No. 2 drive providing secure tool engagement and reduced cam-out risk
• Consistent thread performance through Class 2A thread fit and UNC coarse threading for vibration resistance
• Full-length fastening capability with completely threaded shank design for maximum grip range
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards

Professional Applications & Engineering Value

This 8-32 UNC flat head screw delivers critical engineering solutions for industrial assembly challenges. The passivated 18-8 stainless steel construction provides exceptional resistance to corrosion and chemical exposure, making it ideal for manufacturing equipment, marine components, and food processing machinery where environmental durability is paramount. The fully threaded design ensures maximum holding power across the entire fastener length, while the Class 2A thread fit maintains consistent clamping force in vibrating applications. The Phillips No. 2 drive system offers reliable installation torque transfer, reducing assembly time and improving production efficiency. These flat head screws are engineered to prevent surface protrusion in precision assemblies, with the standardized 100° countersink angle providing secure seating in prepared holes.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards with 8-32 coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.