S-96877A728 1/4"-20 x 7/16" FF-S-92, QQ-P-35, MS51959-78, SAE AMS2700 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 70,000 psi tensile strength ensures reliable fastening under high-stress conditions
• Precise Class 2A thread fit provides smooth installation and consistent engagement in UNC coarse threaded applications
• Undercut flat head design with 82° countersink enables flush mounting and reduced risk of surface damage
• Phillips No. 3 drive compatibility offers widespread tool accessibility and efficient installation
• Full threading along the 7/16" length maximizes grip strength and load distribution across the entire fastener
• Comprehensive regulatory compliance including RoHS 3 and REACH ensures environmental and safety standards are met

Professional Applications & Engineering Value

These 1/4"-20 UNC flat head screws deliver critical performance advantages in demanding industrial settings. The passivated 18-8 stainless steel construction provides excellent resistance to oxidation and chemical exposure, making them ideal for machinery, electrical enclosures, and outdoor equipment where environmental factors threaten fastener integrity. The undercut flat head profile combined with the standardized 82° countersink angle ensures seamless surface integration, preventing protrusion issues in precision assemblies. With their coarse UNC threading and Class 2A thread fit, these screws offer rapid installation and reliable vibration resistance in metal-to-metal and composite material applications. The fully threaded design maximizes clamping force distribution, while the Phillips No. 3 drive accommodates common industrial driving tools for efficient maintenance and assembly operations.

Specification Summary & Compliance

Manufactured to precise dimensional standards including Class 2A thread fit for consistent UNC threading performance. Complies with multiple industrial specifications: Fed. Spec. FF-S-92, QQ-P-35, MS51959-78, and SAE AMS2700. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for hazardous substance restrictions. The 82° countersink angle and undercut head design maintain dimensional accuracy for proper seating in standard countersunk applications.