National Stock Number
4220-01-425-6635
National Stock Number (NSN) 4220-01-425-6635, or NIIN 014256635, (bonnet,regulator,breathing appar) was assigned February 26, 1996 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 a year. There have been 2 contracts issued for this part number, with 2 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE8E922V0697, SPE8E922V0413. The total value of the awarded contracts has been US$ 924.00.
This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.
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 May 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. 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) 39127. [A METALLIC/NONMETALLIC ITEM DESIGNED TO MATE WITH A REGULATOR BODY FOR PROTECTION PURPOSES. IT MAY ALSO PROTECT A BREATHING APPARATUS COMPONENT FROM THE REGULATOR WHEN THIS ONE HAS SHARP EDGES. IT MAY HAVE AN ORIFICE THROUGH WHICH A ROD, SHAFT, STEM, OR AN ADJUSTING SCREW PASSES.]. 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 4220014256635 does not contain precious metals.
This information was last updated on Aug 01, 2025.