S-92178A173 M5 x 20 mm ASTM F879M, ISO 7380 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws
Sealing 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
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
- Tamper-resistant security through specialized Torx T25 drive, preventing unauthorized access in public or sensitive applications.
- Reliable pressure sealing up to 1500 psi with integrated Buna-N rubber O-ring, effectively preventing fluid and gas leaks.
- Wide temperature tolerance from -40° to 225°F, maintaining performance in extreme thermal conditions.
- High tensile strength of 100,000 psi and Rockwell B96 hardness, providing exceptional mechanical durability.
- Precision Class 6g thread fit ensuring smooth installation and secure fastening in metric assemblies.
- Full threading for maximum grip length and uniform load distribution across the entire fastener.
Professional Applications & Engineering Value
This M5 metric sealing screw delivers critical performance where fluid containment and tamper resistance are paramount. The passivated 18-8 stainless steel body resists oxidation in humid or chemical-exposed environments, while the Buna-N rubber O-ring creates a dependable seal against oils, water, and compressed air up to 1500 psi. Its tamper-resistant Torx T25 drive deters disassembly in public infrastructure, transportation, or secured enclosures. Engineers value the Class 6g thread fit for precise engagement in metric coarse threading applications, reducing cross-threading risks and ensuring consistent clamp load. Ideal for pressure vessels, machinery guards, and outdoor equipment, this fastener combines security with sealing in one robust solution.
Specification Summary & Compliance
Manufactured to Class 6g thread tolerance with M5 x 0.8 mm coarse metric threading and fully threaded shank. Complies with ASTM F879M and ISO 7380 standards for dimensional consistency. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries.
