The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-033-5474, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Hensoldt Sensors Gmbh. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-033-5474 |
| Primary Part Number | C42121Z21C4 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — No Item Name Available |
| Manufacturer | Hensoldt Sensors Gmbh |
| Status | CANCELLED |
| Material | COPPER ALLOY |
| Surface Treatment Document and Classification | MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN |
| Material Document and Classification | MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | OXIDE |
| Overall Diameter | 0.275 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Surface Treatment Document and Classification | MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN |
| Material Document and Classification | MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | OXIDE |
| Overall Diameter | 0.275 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| Successor | 5999-01-109-4987 (259869-1) |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | N |
| Unit of Issue | EA |
| SMR Code | YN |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| C42121Z21C4 | Hensoldt Sensors Gmbh (DEU) |
| 800653 | Northern Telecom Systems Corp (USA) |
| 205-CB | Wakefield Engineering Co (USA) |
| 205-CB | Eg and G Wakefield Engineering (USA) |
| 4841-0205-02 | Igm Communications Dba Straightline by Igm (USA) |
| 37-1095-1 | The Boeing Company Div Legacy Wichita (USA) |
| 580R703H03 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 5800583-097400-022 | Hensoldt Sensors Gmbh (DEU) |
| 2889694-2 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5999-01-033-5474 is a Heat Sink,electrical-Electronic, manufactured by Hensoldt Sensors Gmbh, classified under FSC 5999 (No Item Name Available). Status: cancelled.
NSN 5999-01-033-5474 has 9 cross-referenced part numbers: C42121Z21C4 (Hensoldt Sensors Gmbh), 800653 (Northern Telecom Systems Corp), 205-CB (Wakefield Engineering Co), 205-CB (Eg and G Wakefield Engineering), 4841-0205-02 (Igm Communications Dba Straightline by Igm) and 4 more.
There are 7 known substitutes for 5999-01-033-5474: 5999-01-109-4987, 5999-01-326-8159, 1680-00-626-9655 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for C42121Z21C4: Material: COPPER ALLOY; Surface Treatment Document and Classification: MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Unthreaded Mounting Hole Diameter: 0.240 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5999-01-033-5474 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.