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. They incorporate a self-aligning center and an innovative gasket to assure a watertight seal. A patented back-up sealing wall leaves the plate waterproof, even if the gasket is removed. A screw-out plate should be used in compartments where a change in air pressure due to temperature or oil canning can occur. Deck plates also are used for access, inspection, and clean out for tanks and compartments, or just as a general access for shut-off valves or back- fastenings. Clear center plates permit observation of controls or gauges and visual inspection without the necessity of removing the plate.
White Out Side Diameter : 6-1/8" Inside Diameter : 4" Hole Cut : 4-1/2" Sh. Wt. 1 lb.