National Stock Number (NSN) 4910-00-138-1819, or NIIN 001381819, (constrictor,bead expanding,pneum) was assigned July 30, 1971 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. None of the associated 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 Oct 14, 2015. There have been 7 contracts issued for this part number, with 7 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7L716V0054, SPM7L412V4374, SPM7LA11V0592, SPM7LA11V0592, SPM7LA11V0437. The total value of the awarded contracts has been US$ 49,410.07.
This NSN is somewhat common among different platforms, belonging to 4 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 Jun 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 20937. [A DEVICE USED TO APPLY PRESSURE ABOUT THE TREAD CIRCUMFERENCE OF A TUBELESS PNEUMATIC TIRE, CAUSING THE TIRE BEADS TO EXPAND AGAINST THE WHEEL RIM TO FORM AN AIRTIGHT SEAL. IT CONSISTS OF EITHER AN AIR, HYDRAULIC, SCREW, OR FRICTION FORCE CONTRACTED BAND, OR OF A CONFINED, INFLATABLE, CIRCULAR TUBE, INSIDE WHICH THE TIRE IS PLACED FOR APPLICATION OF PRESSURE.]. 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 4910001381819 contains an unknown precious metal.
This NSN is associated to Schedule B 4016950000: inflatable articles, except boat or dock fenders, of vulcanized rubber other than hard rubber, nesoi. 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 Jul 01, 2025.