S-91870A406 M4 x 10 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 specialized Torx T20 drive for superior security in restricted access areas
- Exceptional corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- High mechanical reliability with 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications
- Precision thread engagement featuring Class 6g fit and coarse threading for secure fastening in various materials
- Optimal flush mounting with standard 90° countersink angle and flat head design for smooth surface finishes
- Full-threaded coverage ensuring maximum grip strength across the entire 10mm fastener length
- Regulatory compliance meeting international standards for safety and environmental requirements
Professional Applications & Engineering Value
These M4 metric flat head screws with tamper-resistant Torx T20 drive provide critical security solutions for industrial equipment, public infrastructure, and electronic enclosures where unauthorized access prevention is paramount. The 18-8 stainless steel material combined with passivated finish delivers superior corrosion resistance in harsh environments, while the Class 6g thread fit ensures precise engagement in both metallic and composite materials. The fully threaded design and coarse 0.7mm pitch enable rapid installation and high vibration resistance, making them ideal for manufacturing assembly lines, transportation systems, and security applications requiring reliable, long-term fastening solutions.
Specification Summary & Compliance
This security fastener maintains Class 6g thread tolerance according to metric standards with M4 x 0.7mm coarse threading and right-hand thread direction. Manufacturing specifications comply with ASTM F879M standard requirements, ensuring consistent quality and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for global industrial applications.
