The Heat Sink Assembly, cataloged under National Stock Number 1680-01-656-8079, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-656-8079 |
| Primary Part Number | 123SCEC5221-5 |
| Item Name | Heat Sink Assembly |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | V |
| Part Number | Manufacturer |
|---|---|
| 123SCEC5221-5 PRIMARY | Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems (USA) |
| 123SCEC5221-5 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 60716-000 PRIMARY | Ametek Thermal Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 123SCEC5221-5 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1680-01-656-8079 is a Heat Sink Assembly, manufactured by Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-656-8079 has 3 manufacturer part numbers on file: 123SCEC5221-5 (Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems), 123SCEC5221-5 (Northrop Grumman Systems Corporation), 60716-000 (Ametek Thermal Systems Inc).
Key specifications for 123SCEC5221-5: Part Name Assigned by Controlling Agency: HEAT SINK ASSEMBLY; End Item Identification: ELCS SYSTEM INSTALL. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1680-01-656-8079 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.