National Stock Number
4820-00-433-7957
National Stock Number (NSN) 4820-00-433-7957, or NIIN 004337957, (regulator,compressed gas) was assigned May 14, 1974 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 24 contracts issued for this part number, with 24 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 7 different suppliers. The last contract numbers awarded were: SPE7L323F7028, SPE7L322F334J, SPE7L322F1864, SPE7L321F1834, SPE7L320F4379. The total value of the awarded contracts has been US$ 327,796.64.
This NSN is somewhat common among different platforms, belonging to 8 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 Sep 15, 2011, 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) 49444. [A SPECIALLY DESIGNED REGULATOR WITH EITHER A STANDARD COMPRESSED GAS ASSOCIATION (CGA) GAS INLET/OUTLET CONNECTION OR PIPE CONNECTIONS. IT PROVIDES FOR THE CONTROLLED WITHDRAWAL OF COMPRESSED GAS FROM A COMPRESSED GAS CYLINDER EITHER BY DIRECT ATTACHMENT TO THE CYLINDER OR BY INSERTION INTO A PIPING DISTRIBUTION SYSTEM THAT IS PRESSURED BY A CYLINDER.]. The item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820004337957 does not contain precious metals.
This NSN is associated to Schedule B 8481909090: parts of taps, cocks, valves and similar appliances, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.
This information was last updated on Aug 01, 2025.