S-91771A301 12-24 x 2" 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 long-lasting performance in harsh environments
• Exceptional tensile strength rated at 80,000 PSI for reliable fastening in demanding industrial applications
• Precision thread engagement with Class 2A UNC coarse threads ensuring consistent, vibration-resistant connections
• Optimized flush mounting featuring an 82° countersink angle and standard flat head profile for seamless surface integration
• Enhanced drive stability with Phillips No. 3 drive style providing secure torque transmission during installation
• Full 2-inch threading offering maximum grip length and load distribution across the entire fastener
• Industry compliance assurance meeting ASME B18.6.3 specifications and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 12-24 UNC flat head screws deliver critical engineering advantages in industrial fastening applications where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and environmental degradation, making these fasteners ideal for marine equipment, food processing machinery, and outdoor industrial installations. The combination of 80,000 PSI tensile strength and Rockwell B80 hardness ensures reliable performance under heavy loads and vibration, while the fully threaded design maximizes clamping force distribution. The 82° countersink angle and standard flat head profile enable flush mounting in precision applications where surface protrusion cannot be tolerated, providing both aesthetic cleanliness and functional safety in assembled products.

Specification Summary & Compliance

This 2-inch flat head screw features precision 12-24 UNC coarse threads with Class 2A thread fit for consistent engagement and assembly efficiency. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance compliance for global industrial applications. The right-hand thread direction with coarse spacing provides optimal installation speed and holding power in various materials.