A screw-out plate should be used in compartments where a change in air pressure due to temperature or oil canning can occur.
Our clear center plates permit observation of controls or gauges and visual inspection without the necessity of removing the center. Deck plates are used for access to shut-off valves or back-fastenings, inspection, and clean out for tanks and compartments. 6" Clear Center Screw-Out Deck Plate - Black Screw-Out Deck Plate The Beckson Screw-Out Plate was designed to provide access without the use of tools, with a single start non-jamming (no cross-thread), extra strong, self-cleaning buttress thread.