S-97870A191 M4 x 6 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance with integrated Buna-N rubber O-ring to reliably withstand pressures up to 1500 psi, preventing leaks in critical applications.
• Enhanced Tamper Resistance featuring a T20 Torx drive that deters unauthorized access, ideal for secure installations.
• Excellent Corrosion Resistance due to the 18-8 stainless steel construction and passivated finish, ensuring long-term durability in harsh environments.
• Precise Thread Fit with Class 6g coarse threads for easy installation and reliable holding power in metric assemblies.
• Optimized Head Design with an undercut flat head profile for a flush finish and improved seating in countersunk holes.
• Broad Temperature Compatibility as the O-ring operates effectively from -40° to 225° F, suitable for varied industrial conditions.
• Full Regulatory Compliance meeting RoHS 3 and REACH standards, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M4 flat head screw is engineered to address common challenges in industrial sealing and security. The combination of 18-8 stainless steel and a passivated finish provides robust corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The tamper-resistant Torx drive (T20) prevents tampering in public or high-security settings, while the integrated Buna-N rubber O-ring ensures a tight seal against fluids and gases, capable of handling up to 1500 psi. Fully threaded with a coarse thread pitch of 0.7mm and Class 6g fit, it offers quick assembly and reliable performance in machinery, electronics, automotive, and plumbing systems where metric fasteners are standard.

Specification Summary & Compliance

This fastener features precise metric threading (M4 x 0.7mm) with a Class 6g thread fit for consistent engagement and tolerance. The flat head with undercut profile and 90° countersink angle ensures a seamless finish. Manufactured from 18-8 stainless steel with a passivated finish for enhanced durability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, adhering to environmental and safety standards for industrial use.