S-97870A178 M3 x 8 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security: Tamper-resistant Torx T10 drive prevents unauthorized removal, ideal for public or high-security installations.
• Reliable Sealing: Integrated Buna-N rubber O-ring provides a robust seal against dust, moisture, and fluids, capable of withstanding pressures up to 1500 psi.
• Superior Corrosion Resistance: 18-8 stainless steel construction with a passivated finish ensures excellent durability in harsh or humid environments.
• Broad Temperature Tolerance: O-ring maintains sealing integrity across a wide temperature range from -40° to 225° F, suitable for varied operational conditions.
• Precise Thread Engagement: Fully threaded M3 x 0.5 mm coarse thread with Class 6g fit guarantees consistent, reliable fastening and easy installation.
• Streamlined Installation: Undercut flat head design allows for a flush, low-profile finish, reducing snagging and improving aesthetics.
• 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 critical challenges in industrial assembly where both security and environmental sealing are paramount. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to corrosion, making it ideal for outdoor equipment, marine applications, and chemical processing units. The tamper-resistant Torx T10 drive deters vandalism and unauthorized access in public infrastructure, electronic enclosures, and utility panels. Furthermore, the integrated Buna-N rubber O-ring ensures a reliable seal against water, oil, and dust ingress, protecting sensitive components in automotive, HVAC, and pneumatic systems. Its metric coarse thread and Class 6g fit facilitate quick, secure installations, reducing assembly time and maintenance needs in high-volume production environments.

Specification Summary & Compliance

This fastener features precise M3 x 0.5 mm coarse threads with a Class 6g thread fit for consistent engagement and durability. The undercut flat head and 90° countersink angle ensure a flush mount in appropriate applications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for use in regulated industries and environmentally conscious supply chains.