National Stock Number (NSN) 2540-01-421-5231, or NIIN 014215231, (chock,wheel-track) was assigned November 9, 1995 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, 2 suppliers are listed as Active suppliers 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 Sep 10, 2018. There have been 5 contracts issued for this part number, with 5 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7L518V2456, SPE7L018V7694, SPE7L017V7195, SPE7L017V7195, SPE7L017V7195. The total value of the awarded contracts has been US$ 13,730.25.
This NSN is unique to one weapons system.
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 Sep 02, 2005, 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 Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 33472. [AN ITEM CONSISTING OF A SINGLE CHOCK OR A PAIR OF CHOCKS WHICH ARE CONNECTED BY A SPREADER BAR, ROPES, OR THE LIKE. IT IS DESIGNED TO BE PLACED IN FRONT OF, AND/OR BEHIND A WHEEL OR TRACK TO PREVENT MOVEMENT.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 2540014215231 does not contain precious metals.
This NSN is associated to Schedule B 4017000000: hard rubber (for example, ebonite) in all forms, including waste and scrap; articles of hard rubber. The Schedule B End Use is listed as industrial rubber products. NAICS classification category 326299: all other rubber product manufacturing.
This information was last updated on Aug 01, 2025.