NSN 5999-01-171-8872, 5999011718872
HEAT SINK,ELECTRICAL-ELECTRONIC

Federal Supply Classification: FSC 5999 - Miscellaneous Electrical and Electronic Components
National Item Identification Number: NIIN 011718872
Codification Country: United States
Item Name Code: INC 61433
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (P) 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.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5999-01-171-8872

National Stock Number (NSN) 5999-01-171-8872, or NIIN 011718872, (heat sink,electrical-electronic) was assigned February 15, 1984 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 2 suppliers are listed as Active suppliers 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 fairly common among different weapons systems, belonging to 11 different platforms.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 19, 2019, this NSN's acquisition method was noted as: Not established. Not established.

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 5999011718872 does not contain precious metals.

This NSN is associated to Schedule B 8543909000: electrical machines and apparatus parts, nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335999: all other miscellaneous electrical equipment and component manufacturing.

This information was last updated on Aug 01, 2025.