S-96669A241 3/8"-16 x 5/8" ASME B18.3 Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance - Integrated Buna-N rubber O-ring creates reliable seals against fluids and contaminants, handling pressures up to 1500 psi for leak-proof assemblies
• Enhanced Tamper Resistance - Special T45 Torx drive design prevents unauthorized removal while ensuring secure installation in high-security applications
• Exceptional Corrosion Resistance - 18-8 stainless steel construction with passivated finish provides maximum durability in harsh environments and chemical exposure
• Optimized Seating & Flush Installation - Undercut flat head design with 82° countersink angle ensures proper seating and smooth surface finish without protrusion
• High Mechanical Strength - 70,000 psi tensile strength delivers reliable performance under heavy loads and vibration conditions
• Wide Temperature Compatibility - Buna-N O-ring maintains sealing integrity across extreme temperatures from -40°F to 225°F
• Secure Thread Engagement - Class 2A thread fit with full UNC coarse threading ensures consistent, reliable fastening in various materials

Professional Applications & Engineering Value

This 18-8 stainless steel flat head screw with integrated Buna-N sealing O-ring addresses critical engineering challenges in industrial applications where both security and environmental sealing are paramount. The tamper-resistant T45 drive system prevents unauthorized access in public facilities, machinery, and equipment while the undercut flat head profile ensures flush mounting for aerodynamic and safety requirements. The combination of passivated finish and stainless steel material provides exceptional corrosion resistance in marine, chemical processing, and outdoor applications. The coarse UNC threading with Class 2A fit guarantees reliable installation in various substrates, making it ideal for high-pressure sealing applications up to 1500 psi in hydraulic systems, pump enclosures, and industrial machinery where fluid containment is critical.

Specification Summary & Compliance

This fastener features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and meets ASME B18.3 manufacturing specifications. The screw maintains dimensional accuracy with 0.781" head diameter and 82° countersink angle for proper installation. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for industrial applications worldwide.