The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-435-1972, 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 Electrodynamics Inc Div L3harris Electrodynamics Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 — Miscellaneous Electrical and Electronic Components (FSG 59) |
| Manufacturers | Raytheon Company Div Rmd Strategic (CAGE 05869); Electrodynamics Inc Div L3harris Electrodynamics Inc (CAGE 10236) |
| Parameter | Value |
|---|---|
| NSN | 5999-00-435-1972 |
| Primary Part Number | 123-773-1 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Electrodynamics Inc Div L3harris Electrodynamics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
NSN 5999-00-435-1972 is a Heat Sink,electrical-Electronic, manufactured by Electrodynamics Inc Div L3harris Electrodynamics Inc, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-435-1972 has 2 manufacturer part numbers on file: 5025-551 (Raytheon Company Div Rmd Strategic), 123-773-1 (Electrodynamics Inc Div L3harris Electrodynamics Inc).
1 possible match (shared part number, not a government interchangeability claim): 1005-00-502-5551. 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.