S-90517A390 M8 x 30 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
- Enhanced tamper resistance with specialized hex drive design prevents unauthorized removal in high-security environments
- Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for extended service life
- Reliable mechanical performance with 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications
- Precise thread engagement with Class 6g metric coarse threads ensuring consistent fastening performance
- Optimized flush mounting through 90° countersink angle and standard flat head profile for seamless surface integration
- Full-threaded design provides maximum grip length and uniform load distribution across the entire fastener
- Regulatory compliance meets international standards including ASTM F879M, RoHS 3, and REACH for global industrial use
Professional Applications & Engineering Value
These M8 metric flat head screws with tamper-resistant hex drive address critical security and reliability challenges in industrial settings. The 18-8 stainless steel construction combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The specialized security drive design prevents unauthorized access to sensitive equipment while maintaining the installation efficiency of standard hex drives. With Class 6g thread fit and coarse thread pitch, these fasteners deliver consistent clamping force and vibration resistance in machinery, electrical enclosures, and public infrastructure where tampering prevention and long-term performance are paramount requirements.
Specification Summary & Compliance
This M8 x 1.25mm pitch x 30mm length security screw features Class 6g thread tolerance with right-hand coarse threading and full threading along the entire shank. Manufactured to ASTM F879M specifications with 90° countersink angle and 3/16" tamper-resistant hex drive. The product demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors and international markets.
