National Stock Number
8475-01-424-5275
National Stock Number (NSN) 8475-01-424-5275, or NIIN 014245275, (visor lock,helmet) was assigned January 30, 1996 in the Federal Logistics Information System (FLIS). NIIN 014245275 was cancelled on November 17, 2004, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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 assigned to Item Name Code (INC) 28521. [A KNOB HAVING A SCREW OR SPRING TYPE STEM WHICH IS INSERTED THROUGH A SLOT OR CHANNEL IN THE CENTER FRONT OF A HELMET WHERE IT IS ATTACHED TO AND CONTROLS THE MOVEMENT OF THE VISOR FROM A POSITION INSIDE THE HELMET TO A POSITION COVERING THE EYES. IT IS LOCKED IN POSITION BY TURNING THE SCREW OR BY RELEASING PRESSURE ON THE SPRING AS APPLICABLE.]. 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 8475014245275 does not contain precious metals.
This information was last updated on Aug 01, 2025.