S-92178A166 M4 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, ideal for harsh industrial environments
- Enhanced security and tamper-proof operation through specialized Torx T15 drive that prevents unauthorized access
- Reliable fluid and gas sealing with integrated Buna-N rubber O-ring, rated for pressures up to 1500 psi
- Exceptional mechanical strength offering 100,000 psi tensile strength and Rockwell B96 hardness for demanding applications
- Broad temperature compatibility from -40° to 225° F, ensuring performance stability across various operating conditions
- Precision metric threading with Class 6g fit and M4 x 0.7mm coarse thread for secure fastening and easy installation
- Full regulatory compliance meeting ASTM F879M, ISO 7380, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These M4 metric screws with passivated 18-8 stainless steel and Buna-N rubber O-rings provide critical sealing solutions in industrial equipment, automotive assemblies, and electronic enclosures where fluid ingress or pressure loss must be prevented. The tamper-resistant Torx T15 drive ensures secure fastening in public or high-security areas, while the fully threaded coarse pitch design enables rapid installation and vibration resistance. Engineered to withstand extreme temperatures and corrosive environments, these sealing screws eliminate common failure points in machinery, reducing maintenance downtime and enhancing operational reliability for OEMs and maintenance teams.
Specification Summary & Compliance
This rounded head screw features precise M4 x 0.7mm coarse threads with Class 6g tolerance and a 20mm length for consistent fit. Manufacturing adheres to ASTM F879M and ISO 7380 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe use in regulated industries worldwide.
