2040-01-298-3003 (803-5959174)
NSN 2040-01-298-3003 (NIIN 01-298-3003) is a marine hatch in Federal Supply Class 2040, Marine Hardware And Hull Items — a rectangular or square shaped item with cover to be fitted in a deck or platform hatchway opening, used for access to other decks, or platforms or levels. Manufacturer part number 803-5959174; also referenced as 803-5959174 ASSY 3 (Naval Sea Systems Command).
Key specs: individual dog operating control type; 22.5 psi test pressure; full characteristics table below. NIIN assigned April 1989; DEMIL A (none required); unit of issue EA (each), $8,179.52 gov standard price; export Schedule B 8302.49.4500.