# NSN 5999-01-408-7904: Heat Sink-Insulator

NSN 5999-01-408-7904 (also written 5999014087904; NIIN 01-408-7904) is a heat sink-insulator in Federal Supply Class 5999, Miscellaneous Electrical and Electronic Components. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5999-01-408-7904 (5999014087904)
- NIIN: 01-408-7904 (014087904)
- Item name: HEAT SINK-INSULATOR
- Federal Supply Class: [FSC 5999 Miscellaneous Electrical and Electronic Components](https://nsnexplorer.com/fsc/5999/)
- Federal Supply Group: [FSG 59](https://nsnexplorer.com/group/59/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| MATT | MATERIAL | RUBBER SILICONE CLASS Q |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL SPEC ALL MATERIAL RESPONSES -IL-I-49456 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5400 | 13103 | THERMALLOY CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 707-5409-3 | 81579 | MASON ELECTRIC CO. DBA MASON CONTROLS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5999014087904&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5999014087904
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

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