National Stock Number
5999-01-091-4821
National Stock Number (NSN) 5999-01-091-4821, or NIIN 010914821, (heat sink,electrical-electronic component) was assigned March 8, 1980 in the Federal Logistics Information System (FLIS). NIIN 010914821 was cancelled on November 2, 2007, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5999012121101. This NSN does not replace any other NSNs.
There are 5 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. 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.
This NSN is assigned to Item Name Code (INC) 61433. [AN ITEM WHICH IS SPECIFICALLY DESIGNED TO ABSORB, CONDUCT OR DISSIPATE HEAT GENERATED BY AN ELECTRICAL AND/OR ELECTRONIC COMPONENT OR AN EXTERNAL SOURCE IN ORDER TO PREVENT DAMAGE TO THE COMPONENT. DO NOT USE IF A MORE SPECIFIC NAME APPLIES.]. 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 5999010914821 does not contain precious metals.
This information was last updated on Aug 01, 2025.