S-91771A188 8-36 x 3/8" 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
• Precise flush mounting thanks to the 82° countersink angle and standard flat head profile for seamless surface integration
• High tensile strength of 80,000 psi ensures reliable performance under demanding mechanical loads
• Superior thread engagement with fully threaded UNF fine spacing and Class 2A fit for vibration-resistant connections
• Efficient installation using standard No. 2 Phillips drive, reducing tool slippage and assembly time
• Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards for safe, quality-assured applications
• Versatile right-hand threading compatible with common assembly practices across various industries

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 8-36 UNF flat head Phillips screws deliver exceptional value in applications where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel material provides long-term durability against moisture, chemicals, and temperature variations, making them ideal for machinery, electronic enclosures, and automotive assemblies. The fully threaded design with fine thread spacing ensures maximum grip strength and prevents loosening under vibration, while the 82° countersink angle allows for clean, flush installations that meet aesthetic and safety requirements. These screws solve common fastening challenges by combining high tensile strength with regulatory compliance, offering engineers a reliable solution for critical connections in aerospace, manufacturing, and marine environments.

Specification Summary & Compliance

This screw maintains Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing follows ASME B18.6.3 specifications for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.