The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-026-4627, 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 Fairchild Fasteners Europe - Vsd Gmbh. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5999-01-026-4627 |
| Primary Part Number | 3AL635-2R |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Fairchild Fasteners Europe - Vsd Gmbh |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY |
| 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 | Y |
| Unit of Issue | EA |
| Acquisition advice code | ZN |
| Weight | 0.1000 lbs |
| Cube | 0.0069 cu ft |
| Part Number | Manufacturer |
|---|---|
| 3AL635-2R | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3AL635-2RRED | Schroff Inc (USA) |
| Reference | Meaning |
|---|---|
| 3AL635-2R | 3/9 Design control — primary reference Birtcher Corp |
| 3AL635-2RRED | 5/9 Secondary reference Birtcher Corp |
| 033140 | 1/2 Source control — Government-approved source U.S. Government activity |
| 3AL635-2R | 5/2 Secondary reference U.S. Government activity |
NSN 5999-01-026-4627 is a Heat Sink,electrical-Electronic, manufactured by Fairchild Fasteners Europe - Vsd Gmbh, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-026-4627 has 2 manufacturer part numbers on file: 3AL635-2R (Fairchild Fasteners Europe - Vsd Gmbh), 3AL635-2RRED (Schroff Inc).
1 possible match (shared part number, not a government interchangeability claim): 2040-01-075-5488. Verify interchangeability with system specifications before substitution.
Key specifications for 3AL635-2R: Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL; Surface Treatment: ANODIZE; End Item Identification: S-3A,E-2C,A-6E,F-14A,HH-60H,B-52,HH-60J A. 3 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.