National Stock Number
4240-99-602-1528
National Stock Number (NSN) 4240-99-602-1528, or NIIN 996021528, (respirator outfit) has an unknown assigned date. 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, 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 somewhat common among different platforms, belonging to 2 different weapons systems.
This NSN is assigned to Item Name Code (INC) 14568. [AN INDIVIDUAL PROTECTIVE DEVICE DESIGNED TO PROVIDE CLEAN AIR FROM AN UNCONTAMINATED SOURCE TO PERSONNEL IN CONFINED SPACES WHERE HIGH CONCENTRATIONS OF GASES OR LOW OXYGEN CONTENT EXIST. MAY INCLUDE FACEPIECE(S), SAFETY HARNESS, BLOWER, HOSE, HOOD, VEST, AIR REGULATING VALVE, AND EXPLOSIMETER. EXCLUDES:RESPIRATOR, PORTABLE; BREATHING APPARATUS, SELF-CONTAINED; AND ENVIRONMENTAL CONTROL UNIT, PERSONNEL, SELF-CONTAINED.].
This information was last updated on Dec 10, 2025.