S-91771A825 10-32 x 1/4" 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 for long-lasting performance in harsh environments
• Superior strength and durability with 80,000 psi tensile strength and Rockwell B80 hardness to withstand high-stress applications
• Precise thread engagement through Class 2A thread fit and 10-32 UNF fine threads ensuring secure, vibration-resistant connections
• Optimized flush mounting with undercut flat head design and 82° countersink angle for smooth surface finishes
• Efficient installation with Phillips No. 2 drive providing reliable torque transfer and reduced cam-out risk
• Full threading coverage along the 1/4" length for maximum grip and load distribution across joined materials
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver critical engineering solutions where corrosion resistance and flush surface requirements are paramount. The passivated 18-8 stainless steel construction prevents galvanic corrosion in marine, chemical processing, and food-grade environments, while the undercut flat head profile ensures seamless countersinking without material protrusion. The fine UNF threading provides superior vibration resistance in machinery assemblies, and the Phillips No. 2 drive enables efficient installation in confined spaces. With 80,000 psi tensile strength, these fully threaded machine screws maintain joint integrity under dynamic loads, making them ideal for precision equipment, electronic enclosures, and automotive components where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerances ensuring precise mating with UNF threaded components. The 10-32 fine thread configuration maintains consistent pitch accuracy, while the 82° countersink angle conforms to industry-standard recessed mounting requirements. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material traceability for global supply chain integration.