S-91771A841 10-32 x 2 3/4" 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 for extended service life in harsh environments
• High tensile strength of 80,000 psi ensures reliable fastening performance under substantial mechanical loads
• Precision Class 2A thread fit guarantees smooth assembly and consistent engagement in UNF fine-thread applications
• Full threading along the 2 3/4" length provides maximum grip and adjustment flexibility in deep or variable material thicknesses
• Standard 82° countersink angle enables flush mounting for clean, professional finishes in visible applications
• No. 2 Phillips drive offers familiar, efficient installation with common industrial tools
• Compliance with ASME B18.6.3 ensures dimensional consistency and interchangeability in regulated assemblies

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver exceptional engineering value in demanding industrial environments where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides superior protection against oxidation and chemical exposure, making them ideal for machinery, marine equipment, and food processing applications. The UNF fine thread configuration offers enhanced vibration resistance compared to coarse threads, while the fully threaded design ensures maximum holding power across the entire fastener length. The combination of 80,000 psi tensile strength and Rockwell B80 hardness provides durability against shear forces and installation stresses, reducing failure risks in critical assemblies. The standardized 82° countersink angle and flat head profile create seamless surface transitions in precision equipment and structural components.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 2A thread fit tolerance for precision assembly. Thread specification conforms to UNF 10-32 with right-hand orientation and fine spacing. Fully compliant with ASME B18.6.3 mechanical standards for dimensional consistency. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for restricted substance control.