S-97870A198 M5 x 8 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security & Tamper Resistance: Tamper-resistant T25 Torx drive prevents unauthorized removal, ideal for public or high-security installations.
• Reliable Pressure 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: Constructed from 18-8 Stainless Steel with a passivated finish for excellent durability in harsh or humid environments.
• High Tensile Strength: With a tensile strength of 70,000 psi, this screw ensures a secure and long-lasting fastening solution under high stress.
• Optimized for Sealing & Flush Fit: The undercut flat head profile allows for a countersunk, flush installation, enhancing both aesthetics and sealing effectiveness.
• Precision Metric Threading: Features a Class 6g thread fit and coarse M5 x 0.8mm pitch for easy, reliable engagement and high vibration resistance.
• Broad Industrial Compatibility: The Buna-N O-ring's temperature range (-40° to 225° F) makes it suitable for various operational conditions.

Professional Applications & Engineering Value

This M5 flat head screw is engineered to solve critical challenges in industrial assembly, where both security and environmental sealing are paramount. The combination of a tamper-resistant Torx drive and an integrated Buna-N rubber O-ring directly addresses the need for vandal-proof, leak-proof fastening in panels, enclosures, and fluid systems. Made from 18-8 stainless steel with a passivated finish, it resists corrosion, ensuring long-term reliability in outdoor or chemically aggressive settings. The undercut flat head and Class 6g metric thread provide a flush, secure fit that maintains integrity under vibration, making it an indispensable component in machinery, automotive, and electronic housing applications requiring dependable performance and compliance.

Specification Summary & Compliance

This screw features a Class 6g thread fit with an M5 x 0.8mm coarse thread, ensuring dimensional accuracy per standard metric specifications. It is fully threaded for maximum grip and is designed for a maximum hole diameter of 5.562 mm with a 90° countersink angle. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.