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Spanner screws are easily recognizable by the two holes drilled in the top of the head. Sometimes referred to as "snake eye" screws, they are available in stainless steel in Pan, Flat, Flat undercut, and Oval head styles. And now also in metric sizes. They require the matching driver bit to install and remove.

ZAGO’s tamper-proof/security screws are engineered with a unique silicone-rubber O-ring element. When torque is applied to the screw, the "O" ring element is activated, and, subsequently, it creates a virtually impenetrable seal. Your sealing and fastening strength won’t be compromised in the face of vibration, pressure or contamination. ZAGO is one of the very manufacturing companies to engineer such unique pieces of hardware, and today ZAGO has positioned itself the leader in its sector.

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If you have a sealing problem that requires a solution or you need more information and samples, ZAGO Manufacturing is your prime source. With our expertise and specialization in the field, we can help you meet all of your sealing needs. We would like to quote you. Please fill in your information on the right.

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  • Choose your desired specifications
  • Review your specifications
  • Fill out our quote form with your contact information

Choose Specifications

Thread Type

Thread Size


Screw Material

O-Ring Material


Secondary Options

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