The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-217-9409, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5999-01-217-9409 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 6 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Surface Treatment Document and Classification | MIL-T-10727,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | TIN |
| Material | COPPER 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 | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Reference | Meaning |
|---|---|
| 702-417126-002 | 5/2 Secondary reference U.S. Government activity |
| 417-126 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-01-217-9409 is a Heat Sink,electrical-Electronic, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-423-6132. Verify interchangeability with system specifications before substitution.
Key specifications for 5999-01-217-9409: Mounting Facility Type and Quantity: 6 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Surface Treatment Document and Classification: MIL-T-10727,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE; Overall Length: 4.650 INCHES NOMINAL IN. 5 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.