National Stock Number
5920-01-257-1663
National Stock Number (NSN) 5920-01-257-1663, or NIIN 012571663, (fuse link,thermal) was assigned June 13, 1987 in the Federal Logistics Information System (FLIS). NIIN 012571663 was cancelled on August 2, 2016, 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 are 2 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 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 01, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 20348. [A REPLACEABLE, PROTECTIVE, CURRENT CARRYING ELEMENT FOR HEATERS, HEAT DUCTS, AND LIKE ITEMS. IT IS DESIGNED WITH FUSIBLE MATERIAL WHICH WILL MELT AT KNOWN AMBIENT TEMPERATURES AND DISCONNECT THE ITEM FROM ITS POWER SOURCE. SEE ALSO LINK, FUSIBLE, FIRE.]. 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 5920012571663 does not contain precious metals.
This information was last updated on Aug 01, 2025.