S-91771A169 6-32 x 9/16" 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, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precision thread engagement through UNC coarse threading with Class 2A fit, ensuring secure fastening and vibration resistance
• Optimized flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
• Enhanced driving efficiency with Phillips No. 2 drive design, reducing cam-out and improving installation speed
• Full regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for global industrial applications
• Complete threading coverage along the 9/16" length provides maximum grip strength in various material thicknesses

Professional Applications & Engineering Value

These 6-32 flat head Phillips machine screws deliver critical engineering solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction effectively combats chemical exposure and moisture, making them ideal for industrial equipment, marine components, and outdoor machinery. The combination of UNC coarse threading with Class 2A fit ensures rapid installation and reliable performance in vibration-prone applications, while the 82° countersink angle provides flush mounting in precision assemblies. With full threading across the entire 9/16" length, these screws maintain consistent clamping force in both thin and thick materials, addressing common challenges in manufacturing and maintenance operations.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread spacing. Complies with ASME B18.6.3 manufacturing specifications for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Features right-hand thread direction and standard flat head profile with 0.262" head diameter and 0.083" head height for consistent installation performance.