S-91870A420 M3.5 x 6 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 security-critical applications
- Superior corrosion resistance through 18-8 stainless steel construction and passivated finish for extended service life
- High mechanical strength with 80,000 psi tensile strength and Rockwell B96 hardness withstands demanding industrial loads
- Precision thread engagement with Class 6g fit and coarse threading ensures reliable fastening in various materials
- Streamlined installation with fully threaded design and standard flat head profile provides flush mounting
- Regulatory compliance meets ASTM F879M, RoHS 3, and REACH standards for global industrial acceptance
- Optimized drive performance with tamper-resistant T15 Torx delivers superior torque transmission compared to standard drives
Professional Applications & Engineering Value
These M3.5 flat head screws with tamper-resistant Torx drive address critical security and durability challenges in industrial environments. The 18-8 stainless steel construction combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for electronics enclosures, machinery guards, and outdoor equipment where environmental factors degrade ordinary fasteners. The Class 6g thread fit and coarse threading ensure secure fastening in both metallic and composite materials, while the fully threaded design maximizes grip length for vibration-resistant connections. These security screws are engineered to prevent tampering in public infrastructure, transportation systems, and sensitive equipment where unauthorized access poses operational risks.
Specification Summary & Compliance
Manufactured to precise metric dimensions (M3.5 x 0.6 x 6mm) with Class 6g thread tolerance ensuring consistent fit and performance. Complies with ASTM F879M specification for stainless steel metric screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features standard 90° countersink angle and right-hand thread direction for compatibility with industry-standard installations.
