S-91870A113 M5 x 40 mm ASTM F879M Tamper-Resistant Torx Stainless Steel Flat Head Screws
Tamper-Resistant Torx Stainless Steel Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Enhanced tamper resistance with T25 Torx drive, preventing unauthorized access in secure environments.
- Superior corrosion resistance from 18-8 stainless steel and passivated finish, ensuring longevity in harsh conditions.
- Reliable high-strength performance with 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications.
- Secure and consistent fastening due to fully threaded M5 coarse thread with Class 6g fit, providing excellent grip.
- Broad compliance and safety meeting ASTM F879M, RoHS 3, and REACH standards for quality and environmental responsibility.
- Optimized for flat surface mounting with a standard 90° countersink angle, reducing protrusion and improving aesthetics.
- Durable and maintenance-free construction, ideal for permanent or high-security installations.
Professional Applications & Engineering Value
This M5 flat head screw is engineered to address critical needs in industrial and security-focused settings. Its 18-8 stainless steel material and passivated finish offer exceptional resistance to rust and chemicals, making it suitable for outdoor, marine, or chemical exposure environments. The tamper-resistant Torx drive (T25) deters vandalism and tampering, which is vital in public infrastructure, electronics enclosures, and machinery requiring controlled access. With a fully threaded design and coarse metric thread, it ensures rapid installation and strong holding power in various materials, reducing the risk of loosening under vibration. This screw is ideal for applications where reliability, security, and compliance with stringent standards are non-negotiable.
Specification Summary & Compliance
This screw features precise metric threading (M5 x 0.8mm pitch) with a Class 6g thread fit for consistent engagement and tolerance. It complies with ASTM F879M specifications for mechanical properties and dimensions, ensuring interoperability and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations without hazardous substances.
