S-92178A157 M3 x 6 mm ASTM F879M, ISO 7380 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced security and tamper-resistance through specialized Torx T8 drive design, preventing unauthorized access
• Reliable pressure sealing up to 1500 psi with integrated Buna-N rubber O-ring for leak-proof assemblies
• Wide temperature compatibility from -40° to 225°F (-40° to 107°C) maintaining seal integrity across diverse operating conditions
• Precision Class 6g thread fit ensuring smooth installation and secure fastening in metric applications
• Optimized rounded button head profile providing a low-profile, finished appearance while minimizing snagging hazards
• Full threading delivering maximum grip length and uniform clamping force throughout the engagement

Professional Applications & Engineering Value

This M3 metric screw with Buna-N rubber O-ring addresses critical sealing challenges in industrial equipment, electronic enclosures, and machinery requiring pressure containment. The passivated 18-8 stainless steel construction provides exceptional corrosion resistance where environmental factors threaten fastener integrity, while the tamper-resistant Torx T8 drive prevents unauthorized disassembly in public-access or security-sensitive installations. The combination of coarse thread pitch and Class 6g thread fit ensures rapid installation with reduced cross-threading risk, making these rounded head screws ideal for high-volume assembly operations. Engineered to maintain sealing performance under varying thermal conditions and mechanical stress, this fastener solves leakage problems in hydraulic systems, pneumatic controls, and outdoor equipment exposed to moisture and temperature fluctuations.

Specification Summary & Compliance

This precision metric screw features M3 x 0.5mm thread specifications with Class 6g thread fit tolerance for consistent performance. Manufacturing complies with ASTM F879M and ISO 7380 standards, ensuring dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for hazardous substances. The fully threaded design with coarse thread spacing provides optimal engagement in standard metric applications.