National Stock Number (NSN) 3110-00-138-9993, or NIIN 001389993, (cone and rollers,tapered roller) was assigned August 25, 1971 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 3110013607494, 3110013311090, 3110013347130.
There are 17 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 21 suppliers. Today, 20 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 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 Jun 05, 2014. There have been 5 contracts issued for this part number, with 187 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: SPM7LX12D9006, SPM7LX12D9006, SPM7LX12D9006, SPM7LX12D9006, SPM7LX12D9006. The total value of the awarded contracts has been US$ 721,938.91.
This NSN is very common among different weapons systems, belonging to 75 different platforms.
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 Jan 28, 2007, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 00023. [AN ASSEMBLED INNER COMPONENT OF A TAPERED ROLLER BEARING, CONSISTING OF A CONE (WHICH PROVIDES A CONTACT SURFACE FOR THE ROLLING ELEMENTS OF THE BEARING), A COMPLEMENT OF TAPERED ROLLERS (THE ROLLING ELEMENTS), AND FREQUENTLY A RETAINER (WHICH SPACES THE ROLLING ELEMENTS).]. 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 3110001389993 contains an unknown precious metal.
This NSN is associated to Schedule B 8482800080: other ball or roller bearings, including 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 Jul 01, 2025.