National Stock Number (NSN) 3040-01-343-1888, or NIIN 013431888, (shaft,shouldered) was assigned August 7, 1991 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are 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 somewhat common among different platforms, belonging to 6 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 23, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) 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 3040013431888 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.