S-91870A380 M3.5 x 30 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 T15 Torx drive prevents unauthorized access in public or high-security installations
- Superior corrosion resistance through 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
- Reliable mechanical performance with 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications
- Precise thread engagement with Class 6g fit and coarse 0.6 mm pitch ensures secure fastening and vibration resistance
- Streamlined installation through standard flat head profile and 90° countersink angle for flush mounting
- Full-thread design provides maximum grip length and holding power across the entire fastener length
- Regulatory compliance meets ASTM F879M, RoHS 3, and REACH standards for global industrial acceptance
Professional Applications & Engineering Value
This M3.5 metric flat head screw delivers critical security and durability for industrial applications where tampering prevention and environmental resistance are paramount. The 18-8 stainless steel material combined with passivated finish creates a robust barrier against corrosion, making these security screws ideal for outdoor equipment, electronic enclosures, and public infrastructure. The tamper-resistant Torx T15 drive system ensures only authorized personnel can access sensitive components, while the fully threaded design and Class 6g thread fit provide superior vibration resistance and clamping force in machinery, transportation, and telecommunications equipment. These industrial fasteners maintain integrity in demanding conditions while meeting strict industry specifications.
Specification Summary & Compliance
Manufactured to precise metric dimensions with M3.5 thread size, 0.6 mm pitch, and 30 mm length. Threads conform to Class 6g tolerance for consistent fit and performance. Complies with ASTM F879M specification for socket head cap screws, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) regulations for chemical safety. The passivated finish enhances corrosion resistance while maintaining the material's inherent strength characteristics.
