S-91870A490 M5 x 25 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws
Tamper-Resistant Torx Stainless Steel Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced tamper-resistance with T25 Torx drive prevents unauthorized access in high-security applications
- Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- Maximum holding power achieved through full threading and 80,000 psi tensile strength rating
- Precise thread engagement with Class 6g metric coarse threads ensuring reliable fastening in industrial environments
- Optimized flush mounting with standard 90° countersink angle and flat head design
- Consistent mechanical performance backed by Rockwell B96 hardness rating
- Regulatory compliance assurance meeting international standards for safety and environmental requirements
Professional Applications & Engineering Value
This M5 metric flat head screw delivers critical security and durability for demanding industrial applications where tampering prevention and environmental resistance are paramount. The 18-8 stainless steel material combined with passivated finish provides exceptional protection against corrosion in harsh operating conditions, while the tamper-resistant T25 Torx drive ensures only authorized personnel can access sensitive equipment. The fully threaded design with Class 6g thread fit guarantees maximum engagement strength in machinery, electronic enclosures, and public infrastructure installations. Engineering teams specify these security fasteners for applications requiring reliable, long-term fastening solutions that withstand vibration, moisture, and unauthorized interference.
Specification Summary & Compliance
This fastener maintains Class 6g thread tolerance according to metric standards with M5 x 0.8mm coarse threading. Manufacturing specifications comply with ASTM F879M standards, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial markets and environmentally conscious applications.
