S-91771A924 0-80 x 7/16" 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 for extended service life in harsh environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance under high stress
• Precision thread engagement with Class 2A thread fit and UNF fine threads ensuring secure fastening and vibration resistance
• Optimal flush mounting with standard 100° countersink angle and flat head design for seamless surface integration
• Enhanced drive stability with Phillips No. 0 drive style providing secure torque transmission during installation
• Full-thread engagement along the entire 7/16" length for maximum holding power in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3, REACH)

Professional Applications & Engineering Value

These 0-80 UNF flat head screws deliver critical engineering solutions where corrosion resistance and high tensile strength are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical degradation, making them ideal for industrial equipment, electronic enclosures, and marine applications. The fully threaded design with fine thread spacing ensures maximum thread engagement in thin materials and delicate assemblies, while the 100° countersink angle creates a flush surface finish that eliminates protrusions in precision machinery. The Phillips drive system offers reliable installation torque control, reducing the risk of cam-out during high-volume assembly operations. These flat head screws solve common fastening challenges by combining mechanical reliability with environmental compliance for demanding B2B applications.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for precision assembly. Features UNF thread form with 0-80 thread size and right-hand thread direction. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include 80,000 psi tensile strength and Rockwell B80 hardness with fully threaded 7/16" length configuration.