National Stock Number
4220-01-662-3022
National Stock Number (NSN) 4220-01-662-3022, or NIIN 016623022, (bonnet,regulator,breathing appar) was assigned April 3, 2017 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 09, 2017, 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 or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. 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.]. 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 4220016623022 does not contain precious metals.
This information was last updated on Jul 01, 2025.