National Stock Number
4240-01-517-8455
National Stock Number (NSN) 4240-01-517-8455, or NIIN 015178455, (mask,chemical-biological) was assigned February 20, 2004 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 5 years.
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 Apr 27, 2019, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 22753. [AN INDIVIDUAL RESPIRATORY PROTECTIVE DEVICE CONSISTING PRINCIPALLY OF A FACEPIECE OR MUZZLE-PIECE, AND CANISTER OR FILTER ELEMENTS. IT IS DESIGNED TO PROTECT THE RESPIRATORY SYSTEM AND FACE OF PERSONNEL OR ANIMALS AGAINST CHEMICAL OR BIOLOGICAL CONTAMINATION. EXCLUDES:MASK,AIR LINE; MASK,GAS; MASK,OXYGEN; MASK,RIOT CONTROL AGENT; AND RESPIRATOR,AIR FILTERING.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 4240015178455 does not contain precious metals.
This information was last updated on Aug 01, 2025.