3020-00-506-8569 (M3001803)
NSN 3020-00-506-8569 (NIIN 00-506-8569) is a sprocket wheel in Federal Supply Class 3020, Gears, Pulleys, Sprockets, And Transmission Chain — a toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. Manufacturer part number M3001803 (Garwood/Feller IncGarwood Winch Div, CAGE 61465); also referenced as 7974522 (U S Army Tank Automotive Command).
Key specs: not rated hardness test method; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8483.90.1000.