The Heat Sink-Insulator, cataloged under National Stock Number 5999-01-372-6445, 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 Department of the Army Hq United States Army Communications Research and Development Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5999-01-372-6445 |
| Primary Part Number | B4036298 |
| Item Name | Heat Sink-Insulator |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| 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 | YN |
| Part Number | Manufacturer |
|---|---|
| B4036298 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| Reference | Meaning |
|---|---|
| SC-B-681079 | 5/1 Secondary reference U.S. Government activity |
NSN 5999-01-372-6445 is a Heat Sink-Insulator, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-372-6445 has 1 manufacturer part number on file: B4036298 (Department of the Army Hq United States Army Communications Research and Development Command).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-376-0748. Verify interchangeability with system specifications before substitution.
Key specifications for B4036298: Overall Length: 36.190 INCHES NOMINAL IN; Overall Width: 16.180 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: INSULATOR,THERMAL. 0 specifications are documented in the U.S. Government catalog.
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.