The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-666-8273, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is General Atomics Div General Atomics Electromagnetic Systems. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 — Miscellaneous Electrical and Electronic Components (FSG 59) |
| Manufacturers | General Atomics Div General Atomics Electromagnetic Systems (CAGE 4XB60) |
| Parameter | Value |
|---|---|
| NSN | 5999-01-666-8273 |
| Primary Part Number | 3890AS001075-01 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | General Atomics Div General Atomics Electromagnetic Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Part Number | Manufacturer |
|---|---|
| 3890AS001075-01 PRIMARY | General Atomics Div General Atomics Electromagnetic Systems (USA) |
| Reference | Meaning |
|---|---|
| 3890AS001075-01 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5999-01-666-8273 is a Heat Sink,electrical-Electronic, manufactured by General Atomics Div General Atomics Electromagnetic Systems, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-666-8273 has 1 manufacturer part number on file: 3890AS001075-01 (General Atomics Div General Atomics Electromagnetic Systems).
1 possible match (shared part number, not a government interchangeability claim): 3439-01-667-2848. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.