National Stock Number
4220-01-233-6929
National Stock Number (NSN) 4220-01-233-6929, or NIIN 012336929, (bonnet,regulator,breathing apparatus) was assigned June 1, 1986 in the Federal Logistics Information System (FLIS). NIIN 012336929 was cancelled on August 24, 2011, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 4 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 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
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 4220012336929 does not contain precious metals.
This information was last updated on Jun 01, 2025.