4710-00-953-6121 (WW-T-775)
NSN 4710-00-953-6121 (NIIN 00-953-6121) 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 WW-T-775 (Federal Specifications Promulgated, CAGE 81348); also referenced as WW-T-775 TY2 (General Services Administration); B280 5/16 IN. OD (American Society For Testing And).
Key specs: coiled; full characteristics table below. NIIN assigned January 1962; DEMIL A (none required); export Schedule B 7411.10.1000; ships at 0.01 lb / 0.0007 cu ft.