S-97870A211 M5 x 12 mm Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with T25 Torx drive for enhanced security in public or controlled access environments
• Reliable fluid and gas sealing with integrated Buna-N rubber O-ring, rated for pressures up to 1500 psi
• Excellent corrosion resistance from 18-8 stainless steel construction with passivated finish for long service life
• Wide temperature tolerance from -40° to 225° F, maintaining seal integrity across diverse operating conditions
• Precise thread engagement with Class 6g metric coarse threads ensuring consistent installation and load distribution
• Optimized countersinking with 90° undercut flat head design for flush mounting and reduced stress concentration
• Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance and environmental safety

Professional Applications & Engineering Value

This M5 flat head screw delivers critical engineering solutions where both security and sealing performance are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional corrosion resistance for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The tamper-resistant Torx drive prevents unauthorized access in public infrastructure, transportation systems, and security enclosures. The integrated Buna-N rubber O-ring creates a reliable seal against fluids, gases, and contaminants, making it ideal for pneumatic systems, fluid handling equipment, and electronic enclosures requiring IP ratings. The undercut flat head profile ensures proper seating while minimizing surface stress, and the Class 6g thread fit guarantees precise installation in metric applications from manufacturing machinery to automotive assemblies.

Specification Summary & Compliance

This metric screw features M5 x 0.8mm coarse threads with Class 6g thread fit tolerance for reliable engagement. The fastener is fully threaded with 12mm length and manufactured from 18-8 stainless steel with passivated surface treatment. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and market acceptability. The sealing system incorporates a Buna-N rubber O-ring rated for temperatures from -40° to 225° F and maximum pressure of 1500 psi.