Aligning a checkbox in a Flex Datagrid

When you need to align a checkbox within a Flex based Datagrid the best way to do it is to center it with a Horizontal Box as so

<mx:advanceddatagridcolumn headertext="Parts Ordered?" width="80" datafield="parts_ordered" fontweight="bold">
    <mx:itemrenderer>
        <mx:component>
            <mx:hbox disabledoverlayalpha="0.0" enabled="false" horizontalalign="center" verticalalign="middle">
                <mx:checkbox selected="{data.parts_ordered.toString() != 'F'}">
            </mx:HBox>
        </mx:Component>
    </mx:itemRenderer>
</mx:AdvancedDataGridColumn>