The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-070-4099, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5999-01-070-4099 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) FIRST MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) THIRD MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Body Style | EXTRUDED |
| Unthreaded Mounting Hole Diameter | 0.128 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Unthreaded Mounting Hole Diameter | 0.437 INCHES NOMINAL THIRD MOUNTING FACILITY IN |
| Nominal Thread Size | 0.112 INCHES FIRST MOUNTING FACILITY IN |
| Thread Class | 2B FIRST MOUNTING FACILITY |
| Material | ALUMINUM ALLOY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST MOUNTING FACILITY |
| 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 | XN |
| Weight | 0.0500 lbs |
| Cube | 0.0050 cu ft |
| Reference | Meaning |
|---|---|
| SM-C-859748 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-01-070-4099 is a Heat Sink,electrical-Electronic, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
Key specifications for 5999-01-070-4099: Mounting Facility Type and Quantity: 2 THREADED HOLE(S) FIRST MOUNTING FACILITY; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) THIRD MOUNTING FACILITY; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY; Overall Height: 0.625 INCHES NOMINAL IN. 10 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.