National Stock Number (NSN) 3040-01-212-6391, or NIIN 012126391, (shaft,shouldered) was assigned July 16, 1985 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those 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, with the most recent procurement date of Aug 28, 2019. 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 9 different suppliers. The last contract numbers awarded were: SPE7M119V9794, SPE7M119V7513, SPE7M117V7598, SPE7M117V7172, SPM7M112V5168. The total value of the awarded contracts has been US$ 10,477.08.
This NSN is somewhat common among different platforms, belonging to 9 different weapons systems.
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 Nov 22, 2012, 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 or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 22914. [A SHAFT HAVING TWO OR MORE DIFFERENT DIAMETERS (GREATER THAN 0.031 INCHES (0.79 MILLIMETER)) ALONG ITS LENGTH. IT MUST HAVE ONE OR MORE OF THE FOLLOWING CONDITIONS: A SPECIFIED SURFACE FINISH DESIGNATION IN THE RANGE 1 TO 125 MICROINCHES (0.025 TO 3.2 MICROMETERS) ARITHMETICAL AVERAGE (AA), MACHINED PERIPHERAL FLAT(S), CIRCULAR GROOVE(S), KEYWAY(S), SPLINES, THREADS, OR HOLES. THE ENDS AND/OR SHOULDERS MAY BE MACHINED TO ACCOMMODATE BEARINGS, COUPLINGS, AND THE LIKE. IT IS NOT DESIGNED FOR USE IN ALIGNING BY FITTING INTO CORRESPONDING HOLES OF ANOTHER ITEM. FOR ITEMS USED TO SUPPORT ROTATING MEMBERS SEE AXLE(1), SHOULDERED. FOR ITEMS NOT HAVING ANY OF THE ABOVE CONDITIONS SEE PIN, SHOULDER, HEADLESS. EXCLUDES:SHAFT(1), STRAIGHT; AND AXLE(1), STRAIGHT.]. 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 3040012126391 does not contain precious metals.
This NSN is associated to Schedule B 8483105000: transmission shafts and cranks, except camshafts and crankshafts. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.
This information was last updated on Aug 01, 2025.