The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-522-3971, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-522-3971 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY |
| Surface Treatment Document and Classification | MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A |
| Body Style | VERTICALLY MOUNTED W/BOARD MOUNTING TABS |
| Criticality Code Justification | AGAV |
| Unthreaded Mounting Hole Diameter | 0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Material Document and Classification | ASTM B209/11 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B210 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B211 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B241 ASSN STD SINGLE MATERIAL RESPONSE OR SAE-AMS-Q-AA-250/11 ASSN STD SINGLE MATERIAL RESPONSE OR SAE-AMS-Q-AA-225/8 ASSN STD SINGLE MATERIAL RESPONSE OR SAE-AMS-Q-200/8 ASSN STD SINGLE MATERIAL RESPONSE OR WW-T-700/6, TYPE 1 FED STD SINGLE MATERIAL RESPONSE |
| Surface Treatment | CHROMATE |
| Material | ALUMINUM ALLOY 6061 |
| 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 | H |
| Reference | Meaning |
|---|---|
| 114E6460G2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-01-522-3971 is a Heat Sink,electrical-Electronic, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
Key specifications for 5999-01-522-3971: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY; Overall Height: 0.855 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A; Body Style: VERTICALLY MOUNTED W/BOARD MOUNTING TABS. 8 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.