A housing for sealing mechanical or electrical components therewithin including first and second body portions that are coupled together along parting surfaces to define an interior space. The parting surface of the first body portion defines an opening that extends orthogonal to the parting surfaces. The second body portion includes a protrusion extending into the opening from the parting surface of the second body portion. The fastener engages the protrusion to couple the first and second body portions together. The fastener is inserted through the outer surface of the first body portion.