National Stock Number (NSN) 4140-00-100-4563, or NIIN 001004563, (guard,fan impeller) was assigned December 15, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 7 stock numbers. Five of the National Stock Numbers that it replaces are: 4140015758910, 4140013854913, 4140014115236, 4140011374893, 4140013454281.
There are 23 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 23 suppliers. Today, 20 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 12 suppliers are 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 Jan 22, 2018. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE8E918V0655. The total value of the awarded contracts has been US$ 2,057.60.
This NSN is very common among different weapons systems, belonging to 105 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 17, 2018, 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) 36295. [A SAFETY DEVICE SPECIFICALLY DESIGNED TO PROTECT OR SHIELD A FAN IMPELLER FROM PHYSICAL DAMAGE AND/OR PREVENT POSSIBLE INJURY TO PERSONNEL WHILE THE FAN IS IN OPERATION. IT MAY CONSIST OF A WIREGUARD, SCREEN, GRILLE AND THE LIKE. EXCLUDES COVER, ELECTRIC FAN AND GRILLE, METAL.]. 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 4140001004563 does not contain precious metals.
This NSN is associated to Schedule B 8710000090: parts of armored fighting vehicles,motorized, whether or not fitted with weapons. The Schedule B End Use is listed as military trucks, armored vehicles, etc.. NAICS classification category 336992: military armored vehicle, tank, and tank component manufacturing.
This information was last updated on Jul 01, 2025.