4710-01-297-0059 (340 18990 402234018990)
NSN 4710-01-297-0059 (NIIN 01-297-0059) is a metallic tube in Federal Supply Class 4710, Pipe, Tube And Rigid Tubing — a straight, hollow product, welded or seamless, of round, square, or any other cross section and continuous periphery. Manufacturer part number 340 18990 402234018990; also referenced as 4022 340 18990 (Chart Inc. - Process Systems).
NIIN assigned March 1989; DEMIL A (none required); unit of issue EA (each), $1,140.19 gov standard price; ships at 0.56 lb / 0.1684 cu ft.