S-91771A947 8-32 x 5/16" 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
• Superior holding power achieved through full threading and 80,000 psi tensile strength for reliable fastening
• Optimized drive engagement with No. 2 Phillips drive for efficient installation and reduced cam-out risk
• Consistent dimensional accuracy with Class 2A thread fit ensuring proper mating with UNC threaded components
• Enhanced durability from Rockwell B80 hardness providing excellent wear resistance in demanding applications
• Standardized countersink profile with 100° angle for flush mounting and clean aesthetic finish
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and global environmental standards

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides superior protection against oxidation and chemical exposure, making them ideal for marine, food processing, and outdoor equipment applications. The coarse UNC threading ensures rapid installation and excellent vibration resistance, while the fully threaded design maximizes grip length for superior load distribution. The flat head profile with standard countersink allows for seamless surface integration, eliminating protrusions in precision assemblies. These industrial fasteners solve common challenges of material degradation and joint failure in demanding environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading for consistent performance. Fully compliant with ASME B18.6.3 mechanical specifications, ensuring interchangeability and reliability. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions. Thread size: 8-32, Length: 5/16", with standard 100° countersink angle for proper flush mounting applications.