S-90517A230 M4 x 12 mm ASTM F879M Tamper-Resistant Hex Drive Flat Head Screws
Tamper-Resistant Hex Drive 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
- Tamper-resistant hex drive prevents unauthorized access, enhancing equipment security in public or high-risk environments.
- 18-8 stainless steel construction offers excellent corrosion resistance and durability, ideal for harsh industrial conditions.
- Passivated finish further boosts corrosion protection, extending the screw's service life in humid or chemical-exposed settings.
- High tensile strength of 80,000 psi ensures reliable fastening under heavy loads, reducing the risk of mechanical failure.
- Class 6g thread fit with coarse pitch provides quick, secure installation and consistent engagement in various materials.
- 90° countersink angle and flat head design allows for a flush, low-profile finish, minimizing protrusion and improving safety.
- Full threading ensures maximum grip along the entire length, enhancing holding power in demanding applications.
Professional Applications & Engineering Value
These M4 flat head screws with tamper-resistant hex drive are engineered to address critical security and durability challenges in industrial settings. Made from 18-8 stainless steel and featuring a passivated finish, they resist corrosion and wear in environments like machinery, electronics enclosures, and outdoor infrastructure. The coarse thread and Class 6g fit enable fast, reliable installation, reducing assembly time while maintaining tight tolerances. Ideal for securing access panels, control systems, and public fixtures, these screws prevent tampering and vandalism, ensuring operational integrity and compliance with industry standards for long-term performance.
Specification Summary & Compliance
This screw meets precise dimensional standards, including M4 x 0.7 mm thread size with Class 6g thread fit and a 90° countersink angle. It conforms to ASTM F879M specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial applications.
