National Stock Number
5999-00-852-2256
National Stock Number (NSN) 5999-00-852-2256, or NIIN 008522256, (heat sink,electrical-electronic component) was assigned November 18, 1966 in the Federal Logistics Information System (FLIS). NIIN 008522256 was cancelled on September 2, 1998, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5999012168588. This NSN replaces 1 stock number, 5961010253505.
There are no manufacturer part numbers associated to this NSN.
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 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 5999008522256 contains an unknown precious metal.
This information was last updated on Jul 01, 2026.