A screw-out plate should be used in compartments where a change in air pressure due to temperature or oil canning can occur. Center: Smooth Color: Beige 6" Smooth Center Screw-Out Deck Plate - Beige. Deck plates are used for access to shut-off valves or back-fastenings, inspection, and clean out for tanks and compartments.
1" Drain Plug Screw Type w/Gasket - Black.Ideal installation for transom of personal watercraft, small boats, fish wells, coolers, ice chests, water tanks, etc.
.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.