The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-074-8022, 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 Siemens Schweiz Ag Dba Siemens Switzerland Ltd.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5999-01-074-8022 |
| Primary Part Number | C121Z2C54 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Siemens Schweiz Ag Dba Siemens Switzerland Ltd. |
| Status | ACTIVE |
| 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 | JN |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| C121Z2C54 | Siemens Schweiz Ag Dba Siemens Switzerland Ltd. (CHE) |
| Reference | Meaning |
|---|---|
| 296-2AB | 3/9 Design control — primary reference Eg and G Wakefield Engineering |
| 296-2CB | 5/9 Secondary reference Eg and G Wakefield Engineering |
NSN 5999-01-074-8022 is a Heat Sink,electrical-Electronic, manufactured by Siemens Schweiz Ag Dba Siemens Switzerland Ltd., classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-074-8022 has 1 manufacturer part number on file: C121Z2C54 (Siemens Schweiz Ag Dba Siemens Switzerland Ltd.).
Key specifications for C121Z2C54: Special Features: SNAP-ON MTG; MATERIAL COPPER; FINISH BLACK EBONOL; DIM. 1.250 IN. LG,0 .725 IN. W,0.285 IN. ID IN. 0 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.