S-97870A193 M4 x 10 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Vandal-Resistant Security: Tamper-resistant Torx T20 drive deters unauthorized removal, ideal for public or high-security installations.
• Reliable Fluid & Gas Sealing: Integrated Buna-N rubber O-ring creates a robust seal capable of withstanding pressures up to 1500 psi, preventing leaks in critical applications.
• Superior Corrosion Resistance: Manufactured from 18-8 Stainless Steel with a passivated finish for enhanced durability in harsh or humid environments.
• High Mechanical Strength: Offers a substantial 70,000 psi tensile strength for dependable performance under load and vibration.
• Broad Temperature Compatibility: The O-ring maintains sealing integrity across a wide temperature range from -40° to 225° F.
• Optimized Flush Mounting: The undercut flat head profile allows the screw to sit flush with the surface for a clean, professional finish.
• Precision Thread Engagement: Class 6g thread fit ensures consistent, reliable fastening with standard M4 coarse threaded holes.

Professional Applications & Engineering Value

This M4 flat head screw is engineered to solve critical challenges in industrial assembly and maintenance. The combination of 18-8 stainless steel and a passivated finish provides excellent resistance to oxidation and chemical exposure, making it a durable choice for machinery, outdoor enclosures, and marine equipment. The integrated Buna-N rubber O-ring is the key to its sealing capability, effectively containing fluids and gases in hydraulic systems, pneumatic controls, and pressurized containers up to 1500 psi. The tamper-resistant Torx drive adds a vital layer of security, preventing disassembly in public infrastructure, transportation, or sensitive electronic housings. Its undercut head design ensures a countersunk, non-protruding installation, protecting against snagging and providing a smooth surface finish.

Specification Summary & Compliance

This metric flat head screw features an M4 x 0.7 mm coarse thread with a precision Class 6g thread fit. It is fully threaded and right-hand driven. The product is manufactured in compliance with major environmental and safety regulations, including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006).