S-91900A853 M4 x 16 mm ASTM F879M, ISO 7380 Tamper-Resistant Torx Stainless Steel Button Head Screws
Tamper-Resistant Torx Stainless Steel Button 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 T15 drive for secure installations in high-security environments
- Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment
- Reliable mechanical performance with 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications
- Optimized thread engagement through Class 6g thread fit and coarse pitch design for vibration resistance
- Streamlined installation with low-profile button head design that minimizes protrusion while maintaining clamping force
- Full regulatory compliance meeting international standards including ASTM F879M and ISO 7380 specifications
- Complete thread coverage along the 16mm length for maximum load distribution and fastening security
Professional Applications & Engineering Value
These M4 tamper-resistant Torx button head screws address critical security and durability challenges in industrial settings. The 18-8 stainless steel composition combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for outdoor equipment, medical devices, and electronic enclosures. The specialized T15 tamper-resistant Torx drive prevents unauthorized access while ensuring proper torque transmission during installation. With fully threaded design and Class 6g thread fit, these metric screws maintain consistent clamping force in vibration-prone applications. Engineering teams specify these security fasteners for permanent assemblies where maintenance access must be controlled, while the rounded button head profile eliminates sharp edges in consumer-facing products.
Specification Summary & Compliance
This M4 x 0.7mm x 16mm security screw features precision Class 6g thread tolerance with coarse pitch threading according to metric standards. Manufacturing complies with ASTM F879M and ISO 7380 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries including electronics, automotive, and public infrastructure applications.
