S-95635A670 M4 x 6 mm ASTM F879M Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws
Tamper-Resistant Hex-Drive 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
- Tamper-resistant hex drive prevents unauthorized removal, enhancing security in public or controlled-access environments
- 18-8 stainless steel construction with passivated finish provides excellent corrosion resistance for long-lasting performance in harsh conditions
- 80,000 psi tensile strength and Rockwell B96 hardness ensure reliable fastening under mechanical stress and vibration
- Class 6g thread fit with coarse pitch (0.7mm) enables quick installation and secure holding in various materials
- Fully threaded M4 x 6mm design offers maximum grip length and uniform load distribution
- Rounded button head profile creates a smooth, low-profile finish that reduces snagging and improves safety
- Compliance with ASTM F879M, RoHS 3, and REACH ensures material quality and environmental safety for global industrial applications
Professional Applications & Engineering Value
This M4 tamper-resistant hex screw delivers critical security and durability for industrial equipment, electronic enclosures, and public infrastructure where unauthorized access poses operational risks. The 18-8 stainless steel material combined with passivated finish resists oxidation and chemical exposure, maintaining integrity in humid or corrosive environments. The coarse metric thread (Class 6g) ensures rapid assembly with reduced cross-threading, while the tamper-resistant hex drive (5/32") deters vandalism without compromising installation efficiency. These fully threaded screws provide consistent clamping force in metal, plastic, or composite assemblies, making them ideal for security-focused applications requiring reliable, long-term fastening solutions.
Specification Summary & Compliance
This metric screw features M4 x 0.7mm coarse threads with Class 6g tolerance for precise fit, and is fully threaded along its 6mm length. Manufacturing follows ASTM F879M specifications for consistent mechanical properties. The product is verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international standards for hazardous substance restrictions and chemical safety.
