S-96669A218 8-32 x 1" ASME B18.3 Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance with integrated Buna-N rubber O-ring to prevent leaks and withstand pressures up to 1500 psi, ideal for fluid and gas containment systems.
• Enhanced Tamper Resistance featuring a Tamper-Resistant Torx (T20) drive to deter unauthorized access in public or high-security environments.
• Excellent Corrosion Resistance due to 18-8 Stainless Steel construction and passivated finish, ensuring long-term durability in harsh or humid conditions.
• Reliable Thread Engagement with UNC coarse threads and Class 2A fit, providing secure fastening and reduced risk of cross-threading during installation.
• Optimized Head Design with undercut flat head and 82° countersink angle for flush mounting and improved load distribution in countersunk applications.
• Broad Temperature Compatibility as the O-ring operates from -40 to 225°F, maintaining seal integrity across diverse industrial settings.
• High Tensile Strength of 70,000 psi, offering robust mechanical performance for demanding structural and sealing applications.

Professional Applications & Engineering Value

These 8-32 UNC flat head screws are engineered to address critical challenges in industrial assembly, where reliable sealing and tamper resistance are paramount. The combination of 18-8 stainless steel and a passivated finish ensures exceptional corrosion resistance, making them suitable for outdoor, marine, or chemical-exposed environments. The Tamper-Resistant Torx drive prevents vandalism and unauthorized disassembly in public infrastructure, electrical enclosures, or machinery. Integrated with a Buna-N rubber O-ring, these screws effectively seal against dust, moisture, and pressures up to 1500 psi, ideal for pneumatic systems, fluid handling equipment, and automotive components. The undercut flat head design allows for a flush finish, reducing protrusion risks and improving aerodynamics in assembled products. By meeting ASME B18.3 standards, they guarantee dimensional consistency and interoperability, streamlining procurement and maintenance processes for engineers and OEMs.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including Class 2A thread fit for reliable engagement and UNC coarse threads facilitating quick assembly. It conforms to ASME B18.3 specifications for flat head screws, ensuring mechanical integrity and compatibility. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable manufacturing practices.