The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-199-9121, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-199-9121 |
| Primary Part Number | 775558-1 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Overall Diameter | 1.838 INCHES NOMINAL IN |
| 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 | X |
| Unit of Issue | EA |
| Acquisition advice code | F |
| Weight | 0.2900 lbs |
| Cube | 0.0194 cu ft |
| Part Number | Manufacturer |
|---|---|
| 775558-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 775558-1 | 5/9 Secondary reference Turcotte Mfg Co Inc |
| 775558-1 | 5/9 Secondary reference Standard Tool and Die Co Inc |
| 775558-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-01-199-9121 is a Heat Sink,electrical-Electronic, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-199-9121 has 1 manufacturer part number on file: 775558-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 775558-1: Overall Height: 1.816 INCHES NOMINAL IN; Overall Diameter: 1.838 INCHES NOMINAL IN; Material: ALUMINUM ALLOY. 2 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.