S-91771A289 12-24 x 3/8" 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
• Precise flush mounting featuring an 82° countersink angle and undercut flat head design for seamless surface integration
• Optimized drive efficiency with Phillips No. 3 drive style ensuring secure torque transfer and reduced cam-out risk
• Consistent threading performance through fully threaded UNC coarse spacing with Class 2A fit for reliable engagement
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Right-hand thread direction providing standard installation familiarity and operational convenience

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 12-24 UNC flat head screws deliver critical solutions where surface flushness and material integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional resistance to corrosion and chemical exposure, making them ideal for machinery, electrical enclosures, and outdoor equipment. The undercut flat head profile combined with the 82° countersink angle ensures perfect flush mounting without protrusion, preventing snagging and maintaining aerodynamic surfaces. With fully threaded coarse spacing and Class 2A thread fit, these screws offer superior holding power in metal assemblies, plastics, and composite materials while the Phillips No. 3 drive enables efficient installation in confined spaces.

Specification Summary & Compliance

These 3/8" flat head screws maintain precision Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.6.3 mechanical and dimensional specifications. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence for global industrial applications.