National Stock Number (NSN) 3110-00-155-6302, or NIIN 001556302, (bearing,ball,annular) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 3130011385185, 3110013317490, 3110007691081.
There are 47 manufacturer part numbers associated with this NSN. 37 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 37 suppliers. Today, 25 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 11 sources of supply.
This part number is actively being procured by the US Government, with procurement history within the last 90 days. There have been 10 contracts issued for this part number, with 10 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE4A625PJ806, SPE4A624V4567, SPE4A623PS973, SPE4A623PS973, SPE4A621PT043. The total value of the awarded contracts has been US$ 106,043.80.
This NSN is fairly common among different weapons systems, belonging to 24 different platforms.
There has been a small amount of 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 Dec 23, 2010, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 00014. [A CYLINDRICAL DEVICE IN WHICH THE INNER OR OUTER RING TURNS UPON A SINGLE OR DOUBLE ROW OF HARDENED BALLS WHICH ROLL EASILY BETWEEN THE TWO RINGS, THUS MINIMIZING FRICTION. FOR ITEMS WITH FACES SPECIALLY GROUND FOR DUPLEX MOUNTING SEE BEARING,BALL,DUPLEX. EXCLUDES:BEARING,BALL,AIRFRAME.]. 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 3110001556302 does not contain precious metals.
This NSN is associated to Schedule B 8482105028: angular contact ball 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 May 01, 2025.