S-96669A217 8-32 x 3/4" 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 dust, moisture, and fluids, withstanding pressures up to 1500 psi for leak-proof assemblies.
• Enhanced Tamper Resistance: Tamper-resistant Torx T20 drive prevents unauthorized removal, ideal for public or high-security applications requiring controlled access.
• Excellent Corrosion Resistance: Made from 18-8 stainless steel with a passivated finish, offering long-lasting durability in harsh environments and temperatures from -40 to 225°F.
• Optimized Flush Mounting: Flat head with undercut profile ensures a smooth, low-profile finish that sits flush with surfaces, reducing snagging and improving aesthetics.
• Reliable Thread Engagement: UNC coarse threads with Class 2A fit provide quick assembly and secure fastening, minimizing cross-threading risks.
• High Tensile Strength: With a tensile strength of 70,000 psi, these screws deliver robust holding power for demanding mechanical applications.
• Broad Regulatory Compliance: Meets ASME B18.3 specifications and is RoHS 3 and REACH compliant, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 8-32 UNC flat head screw is engineered to address critical challenges in industrial sealing and tamper-resistant fastening. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to corrosion, oxidation, and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The integrated Buna-N rubber O-ring ensures effective sealing in dynamic and static applications, preventing fluid ingress and maintaining integrity under pressures up to 1500 psi. The tamper-resistant Torx T20 drive adds a layer of security, deterring unauthorized disassembly in public infrastructure, HVAC systems, and electronic enclosures. Its flat head with undercut allows for a clean, flush installation, reducing protrusions in machinery and consumer products where safety and aesthetics are priorities. Fully threaded for maximum grip, this screw is a reliable choice for OEMs and maintenance teams needing durable, compliant fasteners that perform in temperature extremes from -40 to 225°F.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including UNC coarse threads with a Class 2A thread fit for consistent engagement and ease of assembly. It meets ASME B18.3 specifications for flat head screws, ensuring interoperability and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmental and safety standards in global supply chains.