BECKSON MARINE DP40_B_C Beckson 4 inch Clear Center Screw Out Deck Plate Black

beckson 4" clear center screw out deck plate black 4.5" cut manufacturer's part number: dp40-b-cscrew-out deck platethe 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. They incorporate a self-aligning center and an innovative gasket to assure a watertight seal. A back-up sealing wall leaves the plate watertight, even if the gasket is removed. 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 tankspartments. A screw-out plate should be usedpartments where a change in air pressure due to temperature or oil canning can occur. center: clear color: black disclaimer: descriptions and pictures are provided by the manufacturer and may be used for multiple variations or parts.