National Stock Number
3120-00-555-7021
National Stock Number (NSN) 3120-00-555-7021, or NIIN 005557021, (roller,linear-rotary motion) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 28215. [A CYLINDRICAL BODY HAVING A CENTRALLY LOCATED HOLE TO ACCOMMODATE A PIN OR SHAFT FOR ATTACHMENT TO A PUSH ROD GUIDE, YOKE, ROCKER ARM, TURNTABLE, OR RAIL. THE ITEM PROVIDES A ROLLING CONTACT WITH THE FACE OF A VALVE STEM, OR THE LOBES OF A CAM RING OR CAMSHAFT ON ENGINES, FUEL INJECTION PUMPS, LATCHES, TURNTABLES, PARALLEL BEARING SURFACES REQUIRING A ROLLER SUPPORT, AND THE LIKE. EXCLUDES:BEARING, ROLLER, CYLINDRICAL; ROLLER, ELECTRICAL SWITCH; AND FRICTION BEARINGS. SEE ALSO CAM FOLLOWER, NEEDLE BEARING.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3120005557021 contains an unknown precious metal.
This NSN is associated to Schedule B 8482997090: parts, nesoi, for roller bearings or for combined ball/roller bearings, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332991: ball and roller bearing manufacturing.
This information was last updated on Aug 01, 2025.