National Stock Number (NSN) 3120-00-051-4420, or NIIN 000514420, (bearing,plain,self-aligning) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Oct 04, 2016. There have been 3 contracts issued for this part number, with 3 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE4A617V0261, SPE4A516V5790, SPM4A410V2581. The total value of the awarded contracts has been US$ 3,492.20.
This NSN is unique to one weapons system.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 26, 2016, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government does not have adequate data, lacks rights to data, or both, needed to purchase this part from additional sources. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 13208. [A DETACHABLE ASSEMBLY IN OR ON WHICH A JOURNAL, GUDGEON, PIVOT, OR THE LIKE MOVES. IT IS USED TO CARRY A LOAD AND TO REDUCE SLIDING FRICTION. IT DOES NOT EMPLOY ROLLING ELEMENTS. THE ITEM CONSISTS OF A BORED PRECISION GROUND BALL (OR SPHERICAL PLAIN BEARING) AROUND WHICH AN OUTER RING IS FITTED. THE ASSEMBLY MAY BE EITHER SEPARABLE OR NONSEPARABLE. EXCLUDES:BEARING, PLAIN, ROD END AND BEARING, PLAIN, SPHERICAL.]. 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 3120000514420 does not contain precious metals.
This NSN is associated to Schedule B 8482300040: spherical roller bearings, single row. 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 Jun 01, 2025.