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In this day and age the design of many mechanisms and products is not complete without the inclusion of some contingency for the prevention of possible theft and vandalism; the Tappex VANDLGARD NUT is a new way of meeting this requirement.

By combining subtle design with simplicity of application, use of the VANDLGARD NUT provides a different alternative to standard female fasteners whenever a nut would otherwise be left exposed.

The hexagonal portion of the VANDLGARD NUT is designed to break away from the threaded conical shaped body at a predetermined torque leaving in place a tamper proof and properly torqued nut. This ensures that equipment, parts and protective devices cannot be removed or stolen.

Design Aids

  • No special tooling required for installation
  • More secure than fasteners that rely on a tool with unusual geometry
  • Easier to service than riveted or welded joints
  • Conical shape gives attractive cosmetic appearance
  • Easily installed in remote field applications
  • Anodised aluminium material minimises corrosion
  • Engineered break off ensures controlled torque settings


1. The Vandlgard nut is threaded onto the male thread as with a normal nut.


2. The Vandlgard nut is tightened using a standard ring or open ended spanner.


3. At the correct tightening torque the hexagon portion of the nut breaks away from the cone.


4. When set in position the Vandlgard nut presents a smooth attractive low profile; each fastener has been uniformly tightened and is vandalproof.