National Stock Number
4220-01-172-4061
National Stock Number (NSN) 4220-01-172-4061, or NIIN 011724061, (piston,divers helme) was assigned February 20, 1984 in the Federal Logistics Information System (FLIS). This NSN replaces 1 stock number, 3040014449931.
There are 5 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 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 been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 15 contracts issued for this part number, with 9 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: SPE8EJ25F6843, SPE8EJ25F3672, SPE8EJ25F2836, SPE8EJ24F290E, SPE8EJ24F213D. The total value of the awarded contracts has been US$ 579.07.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 244. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 17, 2018, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 77777. 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 4220011724061 does not contain precious metals.
This information was last updated on Jul 01, 2025.