S-91772A066 1-72 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in demanding environments
• Enhanced thread engagement through fine UNF threading and Class 2A fit ensures secure, vibration-resistant fastening
• Optimized drive performance with Phillips No. 0 drive style provides efficient installation and reduced cam-out risk
• High mechanical strength delivering 70,000 PSI tensile strength and Rockwell B70 hardness for reliable load-bearing capability
• Versatile pan head design with rounded profile offers low-profile installation and improved aesthetic appearance
• Full threading coverage along the 1/4" length maximizes grip strength and distribution of clamping force
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for global industrial applications

Professional Applications & Engineering Value

These 1-72 UNF fine thread screws deliver exceptional engineering value through their passivated 18-8 stainless steel composition, providing superior corrosion resistance that prevents degradation in humid or chemically aggressive industrial environments. The pan head Phillips design with No. 0 drive size ensures reliable installation in confined spaces while minimizing stripping during high-torque applications. The fine thread configuration offers enhanced vibration resistance critical for precision equipment, electronic enclosures, and machinery assemblies where loosening under dynamic loads poses significant operational risks. With full threading along the entire 1/4" length, these fasteners distribute clamping forces evenly, preventing joint failure in high-stress applications while maintaining consistent performance across temperature variations common in industrial settings.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance ensuring consistent mating with UNF threaded components. Complies with ASME B18.6.3 mechanical and dimensional specifications for pan head screws. Meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety. The fully threaded design maintains uniform engagement characteristics across the entire fastener length, while the Rockwell B70 hardness and 70,000 PSI tensile strength provide verified mechanical performance data for engineering calculations.