National Stock Number
4240-00-525-9045
National Stock Number (NSN) 4240-00-525-9045, or NIIN 005259045, (helmet,welder''s) was assigned September 1, 1974 in the Federal Logistics Information System (FLIS). NIIN 005259045 was cancelled on July 2, 2004, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN replaces 1 stock number, 4240010714080.
There are 4 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers 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) 11102. [A LOOSE-FITTING, SINGLE-APERTURE MASK SUPPORTED ON THE HEAD BY A HEADGEAR OR HEADBAND. IT IS DESIGNED TO PROTECT THE WEARER'S EYES, EARS, NECK, AND HEAD DURING WELDING OPERATIONS. IT MAY BE FURNISHED WITHOUT FILTER GLASS AND COVER GLASS. EXCLUDES:FACESHIELD, INDUSTRIAL.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). 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 4240005259045 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.