S-92178A172 M5 x 16 mm ASTM F879M, ISO 7380 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with an integrated Buna-N rubber O-ring, effectively containing pressures up to 1500 psi and preventing leaks in critical applications.
• Enhanced tamper resistance via the specialized Torx T25 drive, providing increased security against unauthorized access in public or high-risk environments.
• Excellent corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability and reduced maintenance in harsh or humid conditions.
• Broad temperature compatibility with an O-ring rated from -40° to 225° F, maintaining seal integrity across diverse operational environments.
• High tensile strength of 100,000 psi for dependable load-bearing capability, reducing the risk of fastener failure under stress.
• Precise Class 6g thread fit ensuring smooth installation and secure fastening, minimizing assembly time and improving joint reliability.
• Full threading design allows for adjustable engagement depth, offering flexibility in various material thicknesses and assembly requirements.

Professional Applications & Engineering Value

This M5 metric screw is engineered to address common industrial challenges such as fluid leakage, tampering, and environmental degradation. The passivated 18-8 stainless steel provides robust corrosion resistance, making it ideal for outdoor, marine, or chemical-exposed settings. Its rounded head with tamper-resistant Torx T25 drive enhances security in public infrastructure, machinery, and electronic enclosures. The integrated Buna-N rubber O-ring ensures a reliable seal against water, oil, and gases, supporting applications in pneumatic systems, automotive assemblies, and fluid handling equipment where pressure sealing up to 1500 psi is critical. Fully threaded and built to metric coarse thread standards, it simplifies installation while maintaining consistent performance in vibration-prone environments.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 6g thread fit and M5 x 0.8 mm coarse thread specification. It meets ASTM F879M and ISO 7380 manufacturing standards, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.