S-97870A177 M3 x 6 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Buna-N rubber O-ring provides reliable pressure sealing up to 1500 psi, preventing leaks in critical applications.
• Enhanced Tamper Resistance: Tamper-resistant Torx T10 drive design deters unauthorized access while ensuring secure installation in public or high-security environments.
• Excellent Corrosion Resistance: 18-8 stainless steel construction with passivated finish offers long-lasting durability against rust and harsh industrial conditions.
• Wide Temperature Tolerance: O-ring maintains sealing integrity across a broad temperature range from -40° to 225° F, suitable for varied operational environments.
• Precise Thread Fit: Class 6g thread fit ensures smooth, reliable engagement and consistent performance in metric assemblies.
• Optimized Head Design: Undercut flat head profile allows for flush mounting, reducing protrusion and improving aesthetics in finished products.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility for global industrial use.

Professional Applications & Engineering Value

This M3 flat head screw is engineered to address common challenges in industrial sealing applications, such as fluid containment and pressure management. The combination of 18-8 stainless steel and a passivated finish provides robust corrosion resistance, extending service life in humid or chemically aggressive settings. The tamper-resistant Torx drive not only enhances security but also reduces strip-out during installation, ensuring reliable fastening in machinery, electronics, and public infrastructure. With a Buna-N rubber O-ring, it effectively seals against pressures up to 1500 psi, making it ideal for hydraulic systems, automotive components, and HVAC equipment where leak prevention is critical. The fully threaded design and Class 6g fit facilitate quick assembly and consistent hold, minimizing downtime in production lines.

Specification Summary & Compliance

This fastener features a metric M3 x 0.5 mm coarse thread with Class 6g tolerance for precise fit, and a 6 mm length for compact applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards. The undercut flat head and 90° countersink angle enable seamless integration, while the specified maximum hole diameter of 3.454 mm supports accurate installation in engineered systems.