Kim Keating
SCREWS: security screws
Director of Customer Success ZAGO Manufacturing Co.
Security or tamper-proof seal screws — such as the six-lobe flat head seal screw (left) and the sixlobe button head seal screw (right) — prevent unauthorized removal, thanks to a pin in the center of each drive. A rubber O-ring also forms a 360-degree, leak-proof seal.
What are tamper-proof seal screws and when should you use them?
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Security or tamper-proof seal screws are vital for securing indoor and outdoor, high-asset machinery and the sophisticated components within them, such as 3D cameras and sensors. These specialty seal screws prevent contaminants from leaking in or out of equipment. They also contain a locking mechanism that will not break or open without proper tooling, effectively deterring vandalism and tampering.
After the screw is torqued, the O-ring is sealed and will not break or crack. This ensures the fastener is impervious to contaminants that may seep into and damage equipment or leak out into the environment, including:
The seal difference While security or tamper-proof seal screws may resemble standard security screws — and are all inordinately difficult to remove — there is one significant and visible difference. Security seal screws feature a custom groove under the head of the screw and are engineered with a 360-degree rubber O-ring that, when tightened, squeezes outwardly to form a 360-degree hermetic seal.
Security seal screws are designed for indoor and outdoor use and can withstand harsh weather, high atmospheric pressure, and extreme temperatures (hot and cold). They’re also vibration and corrosion-resistant, and pollutant-free. These screws often provide a more convenient alternative to permanently fastening or welding parts together. This is because
December 2021 www.fastenerengineering.com
• Liquids • Moisture • Precipitation • Saltwater
• Oil • Gas • Disinfectants • Dust or dirt
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